diff --git a/app/Controllers/AbstractCRUDController.php b/app/Controllers/AbstractCRUDController.php
index 26ed81b..d756dab 100644
--- a/app/Controllers/AbstractCRUDController.php
+++ b/app/Controllers/AbstractCRUDController.php
@@ -15,10 +15,7 @@ abstract class AbstractCRUDController extends AbstractWebController
 {
   // 💡 핵심 1: 각 자식 클래스가 사용할 Entity 클래스 경로를 반환하도록 강제
   // 이 메서드는 자식 클래스에서 반드시 구현되어야 합니다.
-  abstract protected function getEntityClass(): string;
-
   // --- 생성 (Create) ---
-
   protected function create_form_process(array $formDatas = []): array
   {
     //초기 기본 Default값 지정
@@ -64,7 +61,7 @@ abstract class AbstractCRUDController extends AbstractWebController
       $this->action_init_process($action);
       $entity = $this->create_process();
       // 💡 동적으로 가져온 Entity 클래스 이름으로 instanceof 검사
-      $entityClass = $this->getEntityClass();
+      $entityClass = $this->service->getEntityClass();
       if (!$entity instanceof $entityClass) {
         throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 {$entityClass}만 가능");
       }
@@ -97,7 +94,7 @@ abstract class AbstractCRUDController extends AbstractWebController
     try {
       $entity = $this->modify_form_process($uid);
       // 💡 동적으로 가져온 Entity 클래스 이름으로 instanceof 검사
-      $entityClass = $this->getEntityClass();
+      $entityClass = $this->service->getEntityClass();
       if (!$entity instanceof $entityClass) {
         throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 {$entityClass}만 가능");
       }
@@ -131,7 +128,7 @@ abstract class AbstractCRUDController extends AbstractWebController
       $this->action_init_process($action);
       $entity = $this->modify_process($uid);
       // 💡 동적으로 가져온 Entity 클래스 이름으로 instanceof 검사
-      $entityClass = $this->getEntityClass();
+      $entityClass = $this->service->getEntityClass();
       if (!$entity instanceof $entityClass) {
         throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 {$entityClass}만 가능");
       }
@@ -158,7 +155,7 @@ abstract class AbstractCRUDController extends AbstractWebController
     try {
       $entity = $this->delete_process($uid);
       // 💡 동적으로 가져온 Entity 클래스 이름으로 instanceof 검사
-      $entityClass = $this->getEntityClass();
+      $entityClass = $this->service->getEntityClass();
       if (!$entity instanceof $entityClass) {
         throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 {$entityClass}만 가능");
       }
@@ -194,7 +191,7 @@ abstract class AbstractCRUDController extends AbstractWebController
       $this->action_init_process($action);
       $entity = $this->view_process($uid);
       // 💡 동적으로 가져온 Entity 클래스 이름으로 instanceof 검사
-      $entityClass = $this->getEntityClass();
+      $entityClass = $this->service->getEntityClass();
       if (!$entity instanceof $entityClass) {
         throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 {$entityClass}만 가능");
       }
diff --git a/app/Controllers/Admin/BoardController.php b/app/Controllers/Admin/BoardController.php
index 383fd11..7cab8a2 100644
--- a/app/Controllers/Admin/BoardController.php
+++ b/app/Controllers/Admin/BoardController.php
@@ -18,10 +18,6 @@ class BoardController extends AdminController
     $this->addActionPaths('board');
   }
   //Action작업관련
-  protected function getEntityClass(): string
-  {
-    return BoardEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
   public function latest(string $category): ResponseInterface
diff --git a/app/Controllers/Admin/Customer/AccountController.php b/app/Controllers/Admin/Customer/AccountController.php
index 378b2c1..8b36c9b 100644
--- a/app/Controllers/Admin/Customer/AccountController.php
+++ b/app/Controllers/Admin/Customer/AccountController.php
@@ -17,10 +17,6 @@ class AccountController extends CustomerController
     }
     $this->addActionPaths('account');
   }
-  protected function getEntityClass(): string
-  {
-    return AccountEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Customer/ClientController.php b/app/Controllers/Admin/Customer/ClientController.php
index 1abf754..d17f56f 100644
--- a/app/Controllers/Admin/Customer/ClientController.php
+++ b/app/Controllers/Admin/Customer/ClientController.php
@@ -18,10 +18,6 @@ class ClientController extends CustomerController
         }
         $this->addActionPaths('client');
     }
-    protected function getEntityClass(): string
-    {
-        return ClientEntity::class;
-    }
     //기본 함수 작업
     //Custom 추가 함수
     //고객 상세정보
diff --git a/app/Controllers/Admin/Customer/CouponController.php b/app/Controllers/Admin/Customer/CouponController.php
index 2724177..a62154a 100644
--- a/app/Controllers/Admin/Customer/CouponController.php
+++ b/app/Controllers/Admin/Customer/CouponController.php
@@ -17,10 +17,6 @@ class CouponController extends CustomerController
     }
     $this->addActionPaths('coupon');
   }
-  protected function getEntityClass(): string
-  {
-    return CouponEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Customer/PointController.php b/app/Controllers/Admin/Customer/PointController.php
index 3bcefe4..4b537a0 100644
--- a/app/Controllers/Admin/Customer/PointController.php
+++ b/app/Controllers/Admin/Customer/PointController.php
@@ -17,10 +17,6 @@ class PointController extends CustomerController
     }
     $this->addActionPaths('point');
   }
-  protected function getEntityClass(): string
-  {
-    return PointEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Customer/ServiceController.php b/app/Controllers/Admin/Customer/ServiceController.php
index 2dabcdd..b42833d 100644
--- a/app/Controllers/Admin/Customer/ServiceController.php
+++ b/app/Controllers/Admin/Customer/ServiceController.php
@@ -19,10 +19,6 @@ class ServiceController extends CustomerController
     $this->addActionPaths('service');
     $this->layouts['javascripts'][] = '<script src="/js/admin/clipboard.js"></script>';
   }
-  protected function getEntityClass(): string
-  {
-    return ServiceEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
   public function create_form_process(array $formDatas = []): array
diff --git a/app/Controllers/Admin/Equipment/LineController.php b/app/Controllers/Admin/Equipment/LineController.php
index 19cfbbe..78541f6 100644
--- a/app/Controllers/Admin/Equipment/LineController.php
+++ b/app/Controllers/Admin/Equipment/LineController.php
@@ -18,10 +18,6 @@ class LineController extends EquipmentController
     }
     $this->addActionPaths('line');
   }
-  protected function getEntityClass(): string
-  {
-    return LineEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Equipment/ServerController.php b/app/Controllers/Admin/Equipment/ServerController.php
index 32d7a2f..d5a8e52 100644
--- a/app/Controllers/Admin/Equipment/ServerController.php
+++ b/app/Controllers/Admin/Equipment/ServerController.php
@@ -19,10 +19,6 @@ class ServerController extends EquipmentController
     $this->addActionPaths('server');
     $this->layouts['javascripts'][] = '<script src="/js/admin/clipboard.js"></script>';
   }
-  protected function getEntityClass(): string
-  {
-    return ServerEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
   public function create_form_process(array $formDatas = []): array
diff --git a/app/Controllers/Admin/Equipment/ServerPartController.php b/app/Controllers/Admin/Equipment/ServerPartController.php
index dcd6cd3..e43e18d 100644
--- a/app/Controllers/Admin/Equipment/ServerPartController.php
+++ b/app/Controllers/Admin/Equipment/ServerPartController.php
@@ -17,10 +17,6 @@ class ServerPartController extends EquipmentController
     }
     $this->addActionPaths('serverpart');
   }
-  protected function getEntityClass(): string
-  {
-    return ServerPartEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
   protected function create_form_process(array $formDatas = []): array
diff --git a/app/Controllers/Admin/MylogController.php b/app/Controllers/Admin/MylogController.php
index 1b9857e..366426e 100644
--- a/app/Controllers/Admin/MylogController.php
+++ b/app/Controllers/Admin/MylogController.php
@@ -17,10 +17,6 @@ class MylogController extends AdminController
         }
         $this->addActionPaths('mylog');
     }
-    protected function getEntityClass(): string
-    {
-        return MylogEntity::class;
-    }
     //기본 함수 작업
     //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Part/CPUController.php b/app/Controllers/Admin/Part/CPUController.php
index dda0192..96d14ff 100644
--- a/app/Controllers/Admin/Part/CPUController.php
+++ b/app/Controllers/Admin/Part/CPUController.php
@@ -17,10 +17,6 @@ class CPUController extends PartController
     }
     $this->addActionPaths('cpu');
   }
-  protected function getEntityClass(): string
-  {
-    return CPUEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Part/CSController.php b/app/Controllers/Admin/Part/CSController.php
index fbb9f8f..527a27f 100644
--- a/app/Controllers/Admin/Part/CSController.php
+++ b/app/Controllers/Admin/Part/CSController.php
@@ -17,10 +17,6 @@ class CSController extends PartController
     }
     $this->addActionPaths('cs');
   }
-  protected function getEntityClass(): string
-  {
-    return CSEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Part/DISKController.php b/app/Controllers/Admin/Part/DISKController.php
index a4b5734..b5be075 100644
--- a/app/Controllers/Admin/Part/DISKController.php
+++ b/app/Controllers/Admin/Part/DISKController.php
@@ -17,10 +17,6 @@ class DISKController extends PartController
     }
     $this->addActionPaths('disk');
   }
-  protected function getEntityClass(): string
-  {
-    return DISKEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Part/IPController.php b/app/Controllers/Admin/Part/IPController.php
index 2b2db53..a3a7365 100644
--- a/app/Controllers/Admin/Part/IPController.php
+++ b/app/Controllers/Admin/Part/IPController.php
@@ -17,10 +17,6 @@ class IPController extends PartController
     }
     $this->addActionPaths('ip');
   }
-  protected function getEntityClass(): string
-  {
-    return IPEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Part/RAMController.php b/app/Controllers/Admin/Part/RAMController.php
index 10c5f7e..7c68fa6 100644
--- a/app/Controllers/Admin/Part/RAMController.php
+++ b/app/Controllers/Admin/Part/RAMController.php
@@ -17,10 +17,6 @@ class RAMController extends PartController
     }
     $this->addActionPaths('ram');
   }
-  protected function getEntityClass(): string
-  {
-    return RAMEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Part/SOFTWAREController.php b/app/Controllers/Admin/Part/SOFTWAREController.php
index 970d527..6f41b0f 100644
--- a/app/Controllers/Admin/Part/SOFTWAREController.php
+++ b/app/Controllers/Admin/Part/SOFTWAREController.php
@@ -17,10 +17,6 @@ class SOFTWAREController extends PartController
     }
     $this->addActionPaths('software');
   }
-  protected function getEntityClass(): string
-  {
-    return SOFTWAREEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/Part/SWITCHController.php b/app/Controllers/Admin/Part/SWITCHController.php
index cd346bb..4fad598 100644
--- a/app/Controllers/Admin/Part/SWITCHController.php
+++ b/app/Controllers/Admin/Part/SWITCHController.php
@@ -17,10 +17,6 @@ class SWITCHController extends PartController
     }
     $this->addActionPaths('switch');
   }
-  protected function getEntityClass(): string
-  {
-    return SWITCHEntity::class;
-  }
   //기본 함수 작업
   //Custom 추가 함수
 }
diff --git a/app/Controllers/Admin/PaymentController.php b/app/Controllers/Admin/PaymentController.php
index 252cc4c..17884e1 100644
--- a/app/Controllers/Admin/PaymentController.php
+++ b/app/Controllers/Admin/PaymentController.php
@@ -21,10 +21,6 @@ class PaymentController extends AdminController
         $this->addActionPaths('payment');
     }
     //Action작업관련
-    protected function getEntityClass(): string
-    {
-        return PaymentEntity::class;
-    }
     //기본 함수 작업
     //Custom 추가 함수
     //일회성 추가용
diff --git a/app/Controllers/Admin/SearchController.php b/app/Controllers/Admin/SearchController.php
index 0f9a35f..b3cab2d 100644
--- a/app/Controllers/Admin/SearchController.php
+++ b/app/Controllers/Admin/SearchController.php
@@ -18,10 +18,6 @@ class SearchController extends AdminController
         $this->addActionPaths('service');
     }
     //Action작업관련
-    protected function getEntityClass(): string
-    {
-        return ServiceEntity::class;
-    }
     //기본 함수 작업
     //Custom 추가 함수
     protected function index_entities_process(array $entities = []): array
diff --git a/app/Controllers/Admin/UserController.php b/app/Controllers/Admin/UserController.php
index 3a4810c..2133e3a 100644
--- a/app/Controllers/Admin/UserController.php
+++ b/app/Controllers/Admin/UserController.php
@@ -18,10 +18,6 @@ class UserController extends AdminController
         $this->addActionPaths('user');
     }
     //Action작업관련
-    protected function getEntityClass(): string
-    {
-        return UserEntity::class;
-    }
     //기본 함수 작업
     //Custom 추가 함수
 }
diff --git a/app/Entities/Part/CPUEntity.php b/app/Entities/Part/CPUEntity.php
index c2fb329..f06a181 100644
--- a/app/Entities/Part/CPUEntity.php
+++ b/app/Entities/Part/CPUEntity.php
@@ -9,15 +9,15 @@ class CPUEntity extends PartEntity
     const PK    = CPUModel::PK;
     const TITLE = CPUModel::TITLE;
     //기본기능    
-    final public function getUsed(): int
-    {
-        return $this->attributes['used'];
-    }
-    final public function getStock(): int
+    public function getStock(): int
     {
         return $this->attributes['stock'];
     }
-    final public function getAvailable(): int
+    public function getUsed(): int
+    {
+        return $this->attributes['used'];
+    }
+    public function getAvailable(): int
     {
         return $this->getStock() - $this->getUsed();
     }
diff --git a/app/Entities/Part/CSEntity.php b/app/Entities/Part/CSEntity.php
index c90f625..bee94fb 100644
--- a/app/Entities/Part/CSEntity.php
+++ b/app/Entities/Part/CSEntity.php
@@ -22,4 +22,13 @@ class CSEntity extends PartEntity
     {
         return $this->attributes['domain'] ?? null;
     }
+    //abstract 선언처리용
+    public function getUsed(): int
+    {
+        return 0;
+    }
+    public function getAvailable(): int
+    {
+        return 0;
+    }
 }
diff --git a/app/Entities/Part/DISKEntity.php b/app/Entities/Part/DISKEntity.php
index 71ef342..32e63c4 100644
--- a/app/Entities/Part/DISKEntity.php
+++ b/app/Entities/Part/DISKEntity.php
@@ -9,11 +9,7 @@ class DISKEntity extends PartEntity
     const PK    = DISKModel::PK;
     const TITLE = DISKModel::TITLE;
     //기본기능    
-    final public function getUsed(): int
-    {
-        return $this->attributes['used'];
-    }
-    final public function getStock(): int
+    public function getStock(): int
     {
         return $this->attributes['stock'];
     }
@@ -21,7 +17,11 @@ class DISKEntity extends PartEntity
     {
         return intval($this->attributes['format'] ?? 0);
     }
-    final public function getAvailable(): int
+    public function getUsed(): int
+    {
+        return $this->attributes['used'];
+    }
+    public function getAvailable(): int
     {
         return $this->getStock() - $this->getUsed() - $this->getFormat();
     }
diff --git a/app/Entities/Part/IPEntity.php b/app/Entities/Part/IPEntity.php
index df57edf..9f342fd 100644
--- a/app/Entities/Part/IPEntity.php
+++ b/app/Entities/Part/IPEntity.php
@@ -8,11 +8,11 @@ class IPEntity extends PartEntity
 {
     const PK = IPModel::PK;
     const TITLE = IPModel::TITLE;
-    final public function  getLineInfoUID(): int|null
+    public function  getLineInfoUID(): int|null
     {
         return $this->attributes['lineinfo_uid'] ?? null;
     }
-    final public function  getOldClientInfoUID(): int|null
+    public function  getOldClientInfoUID(): int|null
     {
         return $this->attributes['old_clientinfo_uid'] ?? null;
     }
@@ -21,4 +21,13 @@ class IPEntity extends PartEntity
     {
         return $this->attributes['ip'];
     }
+    //abstract 선언처리용
+    public function getUsed(): int
+    {
+        return 0;
+    }
+    public function getAvailable(): int
+    {
+        return 0;
+    }
 }
diff --git a/app/Entities/Part/PartEntity.php b/app/Entities/Part/PartEntity.php
index b51531b..e242a2b 100644
--- a/app/Entities/Part/PartEntity.php
+++ b/app/Entities/Part/PartEntity.php
@@ -10,6 +10,8 @@ abstract class PartEntity extends CommonEntity
     {
         parent::__construct($data);
     }
+    abstract public function getAvailable(): int;
+    abstract public function getUsed(): int;
     final public function  getClientInfoUID(): int|null
     {
         return $this->attributes['clientinfo_uid'];
diff --git a/app/Entities/Part/RAMEntity.php b/app/Entities/Part/RAMEntity.php
index 7d36257..70a1316 100644
--- a/app/Entities/Part/RAMEntity.php
+++ b/app/Entities/Part/RAMEntity.php
@@ -9,15 +9,15 @@ class RAMEntity extends PartEntity
     const PK    = RAMModel::PK;
     const TITLE = RAMModel::TITLE;
     //기본기능    
-    final public function getUsed(): int
-    {
-        return $this->attributes['used'];
-    }
-    final public function getStock(): int
+    public function getStock(): int
     {
         return $this->attributes['stock'];
     }
-    final public function getAvailable(): int
+    public function getUsed(): int
+    {
+        return $this->attributes['used'];
+    }
+    public function getAvailable(): int
     {
         return $this->getStock() - $this->getUsed();
     }
diff --git a/app/Entities/Part/SOFTWAREEntity.php b/app/Entities/Part/SOFTWAREEntity.php
index 2d9ec46..5d66d14 100644
--- a/app/Entities/Part/SOFTWAREEntity.php
+++ b/app/Entities/Part/SOFTWAREEntity.php
@@ -9,15 +9,15 @@ class SOFTWAREEntity extends PartEntity
     const PK    = SOFTWAREModel::PK;
     const TITLE = SOFTWAREModel::TITLE;
     //기본기능    
-    final public function getUsed(): int
-    {
-        return $this->attributes['used'];
-    }
-    final public function getStock(): int
+    public function getStock(): int
     {
         return $this->attributes['stock'];
     }
-    final public function getAvailable(): int
+    public function getUsed(): int
+    {
+        return $this->attributes['used'];
+    }
+    public function getAvailable(): int
     {
         return $this->getStock() - $this->getUsed();
     }
diff --git a/app/Entities/Part/SWITCHEntity.php b/app/Entities/Part/SWITCHEntity.php
index beb334e..cd2d263 100644
--- a/app/Entities/Part/SWITCHEntity.php
+++ b/app/Entities/Part/SWITCHEntity.php
@@ -8,8 +8,17 @@ class SWITCHEntity extends PartEntity
 {
     const PK    = SWITCHModel::PK;
     const TITLE = SWITCHModel::TITLE;
-    final public function getCode(): string
+    public function getCode(): string
     {
         return $this->attributes['code'] ?? "";
     }
+    //abstract 선언처리용
+    public function getUsed(): int
+    {
+        return 0;
+    }
+    public function getAvailable(): int
+    {
+        return 0;
+    }
 }
diff --git a/app/Services/BoardService.php b/app/Services/BoardService.php
index 47f40e1..aa2c004 100644
--- a/app/Services/BoardService.php
+++ b/app/Services/BoardService.php
@@ -7,6 +7,7 @@ use App\Entities\BoardEntity;
 use App\Forms\BoardForm;
 use App\Helpers\BoardHelper;
 use App\Models\BoardModel;
+use RuntimeException;
 
 class BoardService extends CommonService
 {
@@ -25,6 +26,10 @@ class BoardService extends CommonService
     {
         return new BoardDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return BoardEntity::class;
+    }
     public function getFormService(): BoardForm
     {
         if ($this->_form === null) {
@@ -122,11 +127,19 @@ class BoardService extends CommonService
     }
     protected function create_process(array $formDatas): BoardEntity
     {
-        return new BoardEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof BoardEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 BoardEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): BoardEntity
     {
-        return parent::modify_process($uid, $formDatas);
+        $entity = parent::modify_process($uid, $formDatas);
+        if (!$entity instanceof BoardEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 BoardEntity만 가능");
+        }
+        return $entity;
     }
     //List 검색용
     //FormFilter 조건절 처리
diff --git a/app/Services/CommonService.php b/app/Services/CommonService.php
index 5569321..cb146b6 100644
--- a/app/Services/CommonService.php
+++ b/app/Services/CommonService.php
@@ -18,8 +18,10 @@ abstract class CommonService
     private array $_classPaths = [];
     protected $title = null;
     protected function __construct(protected CommonModel $model) {}
+    abstract public function action_init_process(string $action, array $formDatas = []): void;
     abstract protected function getDTOClass(): string;
     abstract public function createDTO(array $formDatas): CommonDTO;
+    abstract public function getEntityClass(): string;
     abstract public function getFormService(): mixed;
     abstract public function getHelper(): mixed;
     final protected function addClassPaths(string $path): void
@@ -30,12 +32,17 @@ abstract class CommonService
     {
         return $isArray ? $this->_classPaths : implode($delimeter, $this->_classPaths);
     }
-    abstract public function action_init_process(string $action, array $formDatas = []): void;
+    final public function getNextPK(): int
+    {
+        $pkField = $this->model->getPKField();
+        $row = $this->model->selectMax($pkField)->get()->getRow();
+        return isset($row->{$pkField}) ? ((int)$row->{$pkField} + 1) : 1;
+    }
     /**
      * 단일 엔티티를 조회합니다.
      * @return CommonEntity|null CommonEntity 인스턴스 또는 찾지 못했을 경우 null
      */
-    final public function getEntity(string|int|array $where, ?string $message = null): ?CommonEntity
+    public function getEntity(string|int|array $where, ?string $message = null): ?CommonEntity
     {
         try {
             $entity = is_array($where) ? $this->model->where($where)->first() : $this->model->find($where);
@@ -64,7 +71,7 @@ abstract class CommonService
             throw new \Exception($errorMessage, $e->getCode(), $e);
         }
     }
-    final public function getEntities(?array $where = null, array $columns = ['*']): array
+    public function getEntities(?array $where = null, array $columns = ['*']): array
     {
         try {
             $entities = $this->getEntities_process($where, $columns);
@@ -88,13 +95,6 @@ abstract class CommonService
             throw new \Exception($errorMessage, $e->getCode(), $e);
         }
     }
-    final public function getNextPK(): int
-    {
-        $pkField = $this->model->getPKField();
-        $row = $this->model->selectMax($pkField)->get()->getRow();
-        return isset($row->{$pkField}) ? ((int)$row->{$pkField} + 1) : 1;
-    }
-
     //Entity관련
     protected function getEntity_process(CommonEntity $entity): CommonEntity
     {
@@ -153,16 +153,23 @@ abstract class CommonService
         // INSERT 시 Entity의 PK는 0 또는 NULL이어야 함 (DB가 ID를 생성하도록)
         $initialPK = $entity->getPK();
         $result = $this->model->save($entity);
-
         // 최종적으로 DB에 반영된 PK를 반환받습니다. (UPDATE이면 기존 PK, INSERT이면 새 PK)
         $finalPK = $this->handle_save_result($result, $initialPK);
-
         // handle_save_result에서 확인된 최종 PK를 사용하여 DB에서 최신 엔티티를 가져옴
         return $this->getEntity($finalPK);
     }
 
     //생성용
-    abstract protected function create_process(array $formDatas): CommonEntity;
+    protected function create_process(array $formDatas): CommonEntity
+    {
+        // 💡 동적으로 가져온 Entity 클래스 이름으로 instanceof 검사
+        $entityClass = $this->getEntityClass();
+        $entity      = new $entityClass($formDatas);
+        if (!$entity instanceof $entityClass) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 {$entityClass}만 가능");
+        }
+        return $this->save_process($entity);
+    }
     final public function create(object $dto): CommonEntity
     {
         //DTO 타입 체크 로직을 일반화
@@ -170,15 +177,13 @@ abstract class CommonService
         if (!$dto instanceof $dtoClass) {
             throw new RuntimeException(__METHOD__ . "에서 오류발생: " . get_class($dto) . "는 사용할 수 없습니다. ({$dtoClass} 필요)");
         }
-
         $formDatas = $dto->toArray();
         if (!$this->getFormService()->validate($formDatas)) {
             throw new ValidationException(implode("\n", service('validation')->getErrors()));
         }
         // NOTE: create_process에서 엔티티를 생성할 때, 자동 증가(AUTO_INCREMENT) 필드는
         // DB가 처리하도록 NULL이나 빈 값(0)으로 두는 것이 일반적입니다.
-        $entity = $this->create_process($formDatas);
-        return $this->save_process($entity);
+        return $this->create_process($formDatas);
     }
 
     //수정용
@@ -188,17 +193,13 @@ abstract class CommonService
         if (!$entity) {
             throw new \Exception(__METHOD__ . "에서 오류발생: {$uid}에 해당하는 정보을 찾을수 없습니다.");
         }
-
         $pkField = $this->model->getPKField();
-
         // DTO 데이터에서 PK 필드가 있다면 제거하여, fill()에서 기존 PK를 덮어쓰지 않도록 합니다.
         if (isset($formDatas[$pkField])) {
             unset($formDatas[$pkField]);
         }
-
         // 1. 데이터를 Entity에 채웁니다.
         $entity->fill($formDatas);
-
         // 2. (핵심 방어) fill() 작업이 Entity의 PK를 훼손했더라도, 
         //    기존 $uid 값을 사용하여 Entity의 PK를 강제로 복원합니다.
         //    이것이 Model::save()가 UPDATE를 실행하도록 보장하는 최종 방어선입니다.
@@ -207,10 +208,8 @@ abstract class CommonService
             log_message('warning', "modify_process: Entity PK 훼손 감지. '{$currentPK}' 대신 원본 UID '{$uid}'로 강제 복원.");
             $entity->{$pkField} = $uid;
         }
-
         log_message('debug', "save_process 진입 전 Entity PK: " . $entity->getPK() . " (기대값: {$uid})");
-
-        return $entity;
+        return $this->save_process($entity);
     }
     final public function modify(string|int $uid, object $dto): CommonEntity
     {
@@ -219,13 +218,11 @@ abstract class CommonService
         if (!$dto instanceof $dtoClass) {
             throw new RuntimeException(__METHOD__ . "에서 오류발생: " . get_class($dto) . "는 사용할 수 없습니다. ({$dtoClass} 필요)");
         }
-
         $formDatas = $dto->toArray();
         if (!$this->getFormService()->validate($formDatas)) {
             throw new ValidationException(implode("\n", service('validation')->getErrors()));
         }
-        $entity = $this->modify_process($uid, $formDatas);
-        return $this->save_process($entity);
+        return $this->modify_process($uid, $formDatas);
     }
 
     //배치 작업용 수정
@@ -247,8 +244,7 @@ abstract class CommonService
         if (!$this->getFormService()->validate($formDatas)) {
             throw new ValidationException(implode("\n", service('validation')->getErrors()));
         }
-        $entity = $this->batchjob_process($uid, $formDatas);
-        return $this->save_process($entity);
+        return $this->batchjob_process($uid, $formDatas);
     }
 
     //삭제용 (일반)
@@ -287,7 +283,6 @@ abstract class CommonService
     final public function batchjob_delete(string|int $uid): CommonEntity
     {
         $entity = $this->batchjob_delete_process($uid);
-
         $result = $this->model->delete($entity->getPK());
         log_message('debug', $this->model->getLastQuery());
         if ($result === false) {
diff --git a/app/Services/Customer/AccountService.php b/app/Services/Customer/AccountService.php
index ac1bca0..3c4d8b9 100644
--- a/app/Services/Customer/AccountService.php
+++ b/app/Services/Customer/AccountService.php
@@ -26,6 +26,10 @@ class AccountService extends CustomerService
     {
         return new AccountDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return AccountEntity::class;
+    }
     public function getFormService(): AccountForm
     {
         if ($this->_form === null) {
@@ -112,7 +116,11 @@ class AccountService extends CustomerService
     }
     protected function create_process(array $formDatas): AccountEntity
     {
-        return new AccountEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof AccountEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 AccountEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): AccountEntity
     {
diff --git a/app/Services/Customer/ClientService.php b/app/Services/Customer/ClientService.php
index 97a1413..2fa2aa6 100644
--- a/app/Services/Customer/ClientService.php
+++ b/app/Services/Customer/ClientService.php
@@ -26,6 +26,10 @@ class ClientService extends CustomerService
     {
         return new ClientDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return ClientEntity::class;
+    }
     public function getFormService(): ClientForm
     {
         if ($this->_form === null) {
@@ -112,7 +116,11 @@ class ClientService extends CustomerService
     }
     protected function create_process(array $formDatas): ClientEntity
     {
-        return new ClientEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof ClientEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 ClientEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): ClientEntity
     {
diff --git a/app/Services/Customer/CouponService.php b/app/Services/Customer/CouponService.php
index 2688630..d5a1542 100644
--- a/app/Services/Customer/CouponService.php
+++ b/app/Services/Customer/CouponService.php
@@ -26,6 +26,10 @@ class CouponService extends CustomerService
     {
         return new CouponDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return CouponEntity::class;
+    }
     public function getFormService(): CouponForm
     {
         if ($this->_form === null) {
@@ -103,7 +107,11 @@ class CouponService extends CustomerService
     }
     protected function create_process(array $formDatas): CouponEntity
     {
-        return new CouponEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof CouponEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 CouponEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): CouponEntity
     {
diff --git a/app/Services/Customer/PointService.php b/app/Services/Customer/PointService.php
index 544ac0a..a7cf1bd 100644
--- a/app/Services/Customer/PointService.php
+++ b/app/Services/Customer/PointService.php
@@ -26,6 +26,10 @@ class PointService extends CustomerService
     {
         return new PointDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return PointEntity::class;
+    }
     public function getFormService(): PointForm
     {
         if ($this->_form === null) {
@@ -103,7 +107,11 @@ class PointService extends CustomerService
     }
     protected function create_process(array $formDatas): PointEntity
     {
-        return new PointEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof PointEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 PointEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): PointEntity
     {
diff --git a/app/Services/Customer/ServiceService.php b/app/Services/Customer/ServiceService.php
index 60307eb..ca42884 100644
--- a/app/Services/Customer/ServiceService.php
+++ b/app/Services/Customer/ServiceService.php
@@ -28,6 +28,10 @@ class ServiceService extends CustomerService
     {
         return new ServiceDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return ServiceEntity::class;
+    }
     public function getFormService(): ServiceForm
     {
         if ($this->_form === null) {
@@ -129,7 +133,11 @@ class ServiceService extends CustomerService
     }
     protected function create_process(array $formDatas): ServiceEntity
     {
-        return new ServiceEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof ServiceEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 ServiceEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): ServiceEntity
     {
diff --git a/app/Services/Equipment/LineService.php b/app/Services/Equipment/LineService.php
index 90012c1..99ce2bc 100644
--- a/app/Services/Equipment/LineService.php
+++ b/app/Services/Equipment/LineService.php
@@ -26,6 +26,10 @@ class LineService extends EquipmentService
     {
         return new LineDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return LineEntity::class;
+    }
     public function getFormService(): LineForm
     {
         if ($this->_form === null) {
@@ -98,7 +102,11 @@ class LineService extends EquipmentService
     }
     protected function create_process(array $formDatas): LineEntity
     {
-        return new LineEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof LineEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 LineEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): LineEntity
     {
diff --git a/app/Services/Equipment/ServerPartService.php b/app/Services/Equipment/ServerPartService.php
index 26e8a23..c0fc70b 100644
--- a/app/Services/Equipment/ServerPartService.php
+++ b/app/Services/Equipment/ServerPartService.php
@@ -3,12 +3,13 @@
 namespace App\Services\Equipment;
 
 use App\DTOs\Equipment\ServerPartDTO;
-use App\DTOs\UserDTO;
+use App\Entities\Equipment\ServerEntity;
 use App\Entities\Equipment\ServerPartEntity;
+use App\Entities\Part\PartEntity;
 use App\Forms\Equipment\ServerPartForm;
 use App\Helpers\Equipment\ServerPartHelper;
 use App\Models\Equipment\ServerPartModel;
-use App\Services\CommonService;
+use App\Services\Part\PartService;
 use RuntimeException;
 
 class ServerPartService extends EquipmentService
@@ -28,6 +29,10 @@ class ServerPartService extends EquipmentService
     {
         return new ServerPartDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return ServerPartEntity::class;
+    }
     public function getFormService(): ServerPartForm
     {
         if ($this->_form === null) {
@@ -100,33 +105,40 @@ class ServerPartService extends EquipmentService
         $this->getFormService()->setIndexFilters($indexFilter);
         $this->getFormService()->setBatchjobFilters($batchjobFilters);
     }
-    //기본 기능부분
-    private function getPartService(string $type): CommonService
+    //각 파트별 서비스
+    private function getPartService(string $type): PartService
     {
         return service('part_' . strtolower($type) . 'service');
     }
+    //기본 기능부분
     protected function getEntity_process(mixed $entity): ServerPartEntity
     {
         return $entity;
     }
     protected function create_process(array $formDatas): ServerPartEntity
     {
-        if (!array_key_exists('title', $formDatas)) {
-            if (!array_key_exists('type', $formDatas)) {
-                throw new \Exception(__METHOD__ . "에서 오류발생:부품형식이 지정되지 않았습니다.");
-            }
-            $formDatas['title'] = $this->getPartService($formDatas['type']->getTitle());
+        if (!array_key_exists('type', $formDatas)) {
+            throw new \Exception(__METHOD__ . "에서 오류발생:부품형식이 지정되지 않았습니다.");
         }
-        return new ServerPartEntity($formDatas);
+        //각 파트정보 가져오기
+        $partEntity = $this->getPartService($formDatas['type'])->getEntity($formDatas['part_uid']);
+        //서버파트정보 Title 설정용
+        $formDatas['title'] = $partEntity->getTitle();
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof ServerPartEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 ServerPartEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): ServerPartEntity
     {
-        if (!array_key_exists('title', $formDatas)) {
-            if (!array_key_exists('type', $formDatas)) {
-                throw new \Exception(__METHOD__ . "에서 오류발생:부품형식이 지정되지 않았습니다.");
-            }
-            $formDatas['title'] = $this->getPartService($formDatas['type']->getTitle());
+        if (!array_key_exists('type', $formDatas)) {
+            throw new \Exception(__METHOD__ . "에서 오류발생:부품형식이 지정되지 않았습니다.");
         }
+        //각 파트정보 가져오기
+        $partEntity = $this->getPartService($formDatas['type'])->getEntity($formDatas['part_uid']);
+        //서버파트정보 Title 설정용
+        $formDatas['title'] = $partEntity->getTitle();
         $entity = parent::modify_process($uid, $formDatas);
         if (!$entity instanceof ServerPartEntity) {
             throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 ServerPartEntity만 가능");
@@ -136,4 +148,34 @@ class ServerPartService extends EquipmentService
     //List 검색용
     //FormFilter 조건절 처리
     //검색어조건절처리
+
+    //서버추가시 서버파트 자동추가용
+    public function attachToServer(ServerEntity $serverEntity): void
+    {
+        //*서버의 Title 대소문자구분 필요->서버의 Title로 구분해서 기본부품 추가
+        foreach (SERVERPART['SERVER_PARTTYPES'] as $parttype) {
+            //해당 server_type의 정의된 상수값이 있으면
+            if (array_key_exists($serverEntity->getTitle(), SERVERPART[$parttype])) {
+                foreach (SERVERPART[$parttype][$serverEntity->getTitle()] as $part) {
+                    //해당 파트정보 가져오기
+                    $partEntity = $this->getPartService($parttype)->getEntity($part['UID']);
+                    if (!$partEntity instanceof PartEntity) {
+                        throw new \Exception(__METHOD__ . "에서 오류발생: {$part['UID']} 서버 정보를 찾을수 없습니다.");
+                    }
+                    //서버파트정보 생성
+                    $formDatas = [];
+                    $formDatas['serverinfo_uid'] = $serverEntity->getPK();
+                    $formDatas["part_uid"] = $partEntity->getPK();
+                    $formDatas['billing'] = PAYMENT['BILLING']['BASE'];
+                    $formDatas['type'] = $parttype;
+                    $formDatas['title'] = $partEntity->getTitle(); //파트 제목
+                    $formDatas['amount'] = $partEntity->getPrice(); //파트 금액
+                    $formDatas['cnt'] = $part["CNT"];
+                    $formDatas['extra'] = $part["EXTRA"];
+                    $entity = $this->model->create($formDatas);
+                    $this->getPartService($entity->getType())->attachToServerPart($entity);
+                }
+            }
+        }
+    }
 }
diff --git a/app/Services/Equipment/ServerService.php b/app/Services/Equipment/ServerService.php
index 7055cbf..49002fd 100644
--- a/app/Services/Equipment/ServerService.php
+++ b/app/Services/Equipment/ServerService.php
@@ -26,6 +26,10 @@ class ServerService extends EquipmentService
     {
         return new ServerDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return ServerEntity::class;
+    }
     public function getFormService(): ServerForm
     {
         if ($this->_form === null) {
@@ -120,7 +124,13 @@ class ServerService extends EquipmentService
     }
     protected function create_process(array $formDatas): ServerEntity
     {
-        return new ServerEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof ServerEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 ServerEntity만 가능");
+        }
+        //서버추가시 서버파트 자동추가용
+        service('equipment_serverpartservice')->attachToServer($entity);
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): ServerEntity
     {
diff --git a/app/Services/MylogService.php b/app/Services/MylogService.php
index 6e83282..996f6df 100644
--- a/app/Services/MylogService.php
+++ b/app/Services/MylogService.php
@@ -28,6 +28,10 @@ class MylogService extends CommonService implements PipelineStepInterface
     {
         return new MylogDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return MylogEntity::class;
+    }
     public function getFormService(): MylogForm
     {
         if ($this->_form === null) {
@@ -113,10 +117,18 @@ class MylogService extends CommonService implements PipelineStepInterface
     }
     protected function create_process(array $formDatas): MylogEntity
     {
-        return new MylogEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof MylogEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 MylogEntity만 가능");
+        }
+        return $entity;
     }
-    protected function modify_process($uid, array $formDatas): MyLogEntity
+    protected function modify_process($uid, array $formDatas): MylogEntity
     {
-        return parent::modify_process($uid, $formDatas);
+        $entity = parent::modify_process($uid, $formDatas);
+        if (!$entity instanceof MylogEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 MylogEntity만 가능");
+        }
+        return $entity;
     }
 }
diff --git a/app/Services/Part/CPUService.php b/app/Services/Part/CPUService.php
index 71769ba..8754c46 100644
--- a/app/Services/Part/CPUService.php
+++ b/app/Services/Part/CPUService.php
@@ -26,6 +26,10 @@ class CPUService extends PartService
     {
         return new CPUDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return CPUEntity::class;
+    }
     public function getFormService(): CPUForm
     {
         if ($this->_form === null) {
@@ -95,7 +99,11 @@ class CPUService extends PartService
     }
     protected function create_process(array $formDatas): CPUEntity
     {
-        return new CPUEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof CPUEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 CPUEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): CPUEntity
     {
@@ -108,4 +116,10 @@ class CPUService extends PartService
     //List 검색용
     //FormFilter 조건절 처리
     //검색어조건절처리
+    //OrderBy 처리
+    public function setOrderBy(mixed $field = null, mixed $value = null): void
+    {
+        $this->model->orderBy('title ASC');
+        parent::setOrderBy($field, $value);
+    }
 }
diff --git a/app/Services/Part/CSService.php b/app/Services/Part/CSService.php
index b905445..ad89125 100644
--- a/app/Services/Part/CSService.php
+++ b/app/Services/Part/CSService.php
@@ -3,6 +3,7 @@
 namespace App\Services\Part;
 
 use App\DTOs\Part\CSDTO;
+use App\Entities\Equipment\ServerPartEntity;
 use App\Entities\Part\CSEntity;
 use App\Forms\Part\CSForm;
 use App\Helpers\Part\CSHelper;
@@ -26,6 +27,10 @@ class CSService extends PartService
     {
         return new CSDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return CSEntity::class;
+    }
     public function getFormService(): CSForm
     {
         if ($this->_form === null) {
@@ -122,7 +127,11 @@ class CSService extends PartService
     }
     protected function create_process(array $formDatas): CSEntity
     {
-        return new CSEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof CSEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 CSEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): CSEntity
     {
@@ -141,4 +150,49 @@ class CSService extends PartService
         $this->model->orderBy("INET_ATON(ip) ASC");
         parent::setOrderBy($field, $value);
     }
+
+    //서버파트관련 작업
+    public function attachToServerPart(ServerPartEntity $serverPartEntity): CSEntity
+    {
+        $formDatas = [];
+        $formDatas['clientinfo_uid']  = $serverPartEntity->getClientInfoUID();
+        $formDatas['serviceinfo_uid'] = $serverPartEntity->getServiceInfoUID();
+        $formDatas['serverinfo_uid']  = $serverPartEntity->getServerInfoUID();
+        $formDatas['status'] = STATUS['OCCUPIED'];
+        if (!array_key_exists('status', $formDatas)) {
+            throw new \Exception(__METHOD__ . "에서 오류발생: CS상태가 설정되지 않았습니다.");
+        }
+        //CS정보가져오기
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if (!$entity instanceof CSEntity) {
+            throw new \Exception(message: "{$serverPartEntity->getPartUID()}에 해당하는 CS정보를 찾을수없습니다.");
+        }
+        //CS정보에서 해당하는 CS가 있으면 가져와서 사용중인지 체크 후 수정
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if ($entity instanceof CSEntity) {
+            if ($entity->getStatus() !== STATUS['AVAILABLE']) {
+                throw new \Exception(__METHOD__ . ":에서 오류발생: {$serverPartEntity->getTitle()}는 사용중입니다.");
+            }
+            $entity = $this->model->modify($entity, $formDatas);
+        }
+        return $entity;
+    }
+    public function detachFromServerPart(ServerPartEntity $serverPartEntity): CSEntity
+    {
+        $formDatas = [];
+        $formDatas['clientinfo_uid']  = null;
+        $formDatas['serviceinfo_uid'] = null;
+        $formDatas['serverinfo_uid']  = null;
+        $formDatas['status'] = STATUS['AVAILABLE'];
+        if (!array_key_exists('status', $formDatas)) {
+            throw new \Exception(__METHOD__ . "에서 오류발생: CS상태가 설정되지 않았습니다.");
+        }
+        //CS정보가져오기
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if (!$entity instanceof CSEntity) {
+            throw new \Exception("{$serverPartEntity->getPartUID()}에 해당하는 CS정보를 찾을수없습니다.");
+        }
+        //CS정보 수정
+        return $this->model->modify($entity, $formDatas);
+    }
 }
diff --git a/app/Services/Part/DISKService.php b/app/Services/Part/DISKService.php
index dfb9032..07c4161 100644
--- a/app/Services/Part/DISKService.php
+++ b/app/Services/Part/DISKService.php
@@ -26,6 +26,10 @@ class DISKService extends PartService
     {
         return new DISKDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return DISKEntity::class;
+    }
     public function getFormService(): DISKForm
     {
         if ($this->_form === null) {
@@ -97,7 +101,11 @@ class DISKService extends PartService
     }
     protected function create_process(array $formDatas): DISKEntity
     {
-        return new DISKEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof DISKEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 DISKEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): DISKEntity
     {
@@ -110,4 +118,10 @@ class DISKService extends PartService
     //List 검색용
     //FormFilter 조건절 처리
     //검색어조건절처리
+    //OrderBy 처리
+    public function setOrderBy(mixed $field = null, mixed $value = null): void
+    {
+        $this->model->orderBy('title ASC');
+        parent::setOrderBy($field, $value);
+    }
 }
diff --git a/app/Services/Part/IPService.php b/app/Services/Part/IPService.php
index 5bfc02a..efecc64 100644
--- a/app/Services/Part/IPService.php
+++ b/app/Services/Part/IPService.php
@@ -3,6 +3,8 @@
 namespace App\Services\Part;
 
 use App\DTOs\Part\IPDTO;
+use App\Entities\Equipment\ServerEntity;
+use App\Entities\Equipment\ServerPartEntity;
 use App\Entities\Part\IPEntity;
 use App\Forms\Part\IPForm;
 use App\Helpers\Part\IPHelper;
@@ -26,6 +28,10 @@ class IPService extends PartService
     {
         return new IPDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return IPEntity::class;
+    }
     public function getFormService(): IPForm
     {
         if ($this->_form === null) {
@@ -113,7 +119,11 @@ class IPService extends PartService
     }
     protected function create_process(array $formDatas): IPEntity
     {
-        return new IPEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof IPEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 IPEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): IPEntity
     {
@@ -132,4 +142,74 @@ class IPService extends PartService
         $this->model->orderBy("INET_ATON(ip) ASC");
         parent::setOrderBy($field, $value);
     }
+
+    //서버관련 작업
+    public function attachToServer(ServerEntity $serverEntity, array $formDatas = []): IPEntity
+    {
+        $formDatas = [];
+        $formDatas['clientinfo_uid']  = $serverEntity->getClientInfoUID();
+        $formDatas['serviceinfo_uid'] = $serverEntity->getServiceInfoUID();
+        $formDatas['serverinfo_uid']  = $serverEntity->getPK();
+        $formDatas['status'] = STATUS['OCCUPIED'];
+        //IP정보에서 해당하는 IP가 있으면 가져와서 사용중인지 체크 후 수정
+        $entity = $this->getEntity(['ip' => $serverEntity->getIP()]);
+        if (!$entity instanceof IPEntity) {
+            throw new \Exception("{$serverEntity->getIP()}에 해당하는 IP정보를 찾을수없습니다.");
+        }
+        if ($entity->getStatus() !== STATUS['AVAILABLE']) {
+            throw new \Exception(__METHOD__ . ":에서 오류발생: {$serverEntity->getTitle()}는 사용중입니다.");
+        }
+        return $this->model->modify($entity, $formDatas);
+    }
+    public function detachFromServer(ServerEntity $serverEntity): IPEntity
+    {
+        $formDatas                       = [];
+        $formDatas['clientinfo_uid']     = null;
+        $formDatas['serviceinfo_uid']    = null;
+        $formDatas['serverinfo_uid']     = null;
+        $formDatas['old_clientinfo_uid'] = $serverEntity->getClientInfoUID() ?? null;
+        $formDatas['status']             = STATUS['AVAILABLE'];
+        //IP정보가져오기
+        $entity = $this->getEntity(['ip' => $serverEntity->getIP()]);
+        if (!$entity instanceof IPEntity) {
+            throw new \Exception("{$serverEntity->getIP()}에 해당하는 IP정보를 찾을수없습니다.");
+        }
+        //IP정보 수정
+        return $this->model->modify($entity, $formDatas);
+    }
+
+    //서버파트관련 작업
+    public function attachToServerPart(ServerPartEntity $serverPartEntity): IPEntity
+    {
+        $formDatas = [];
+        $formDatas['clientinfo_uid']  = $serverPartEntity->getClientInfoUID();
+        $formDatas['serviceinfo_uid'] = $serverPartEntity->getServiceInfoUID();
+        $formDatas['serverinfo_uid']  = $serverPartEntity->getServerInfoUID();
+        $formDatas['status'] = STATUS['OCCUPIED'];
+        //IP정보에서 해당하는 IP가 있으면 가져와서 사용중인지 체크 후 수정
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if ($entity instanceof IPEntity) {
+            if ($entity->getStatus() !== STATUS['AVAILABLE']) {
+                throw new \Exception(__METHOD__ . ":에서 오류발생: {$entity->getTitle()}는 사용중입니다.");
+            }
+            $entity = $this->model->modify($entity, $formDatas);
+        }
+        return $entity;
+    }
+    public function detachFromServerPart(ServerPartEntity $serverPartEntity): IPEntity
+    {
+        $formDatas                       = [];
+        $formDatas['clientinfo_uid']     = null;
+        $formDatas['serviceinfo_uid']    = null;
+        $formDatas['serverinfo_uid']     = null;
+        $formDatas['old_clientinfo_uid'] = $serverPartEntity->getClientInfoUID() ?? null;
+        $formDatas['status']             = STATUS['AVAILABLE'];
+        //IP정보가져오기
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if (!$entity instanceof IPEntity) {
+            throw new \Exception("{$serverPartEntity->getPartUID()}에 해당하는 IP정보를 찾을수없습니다.");
+        }
+        //IP정보 수정
+        return $this->model->modify($entity, $formDatas);
+    }
 }
diff --git a/app/Services/Part/PartService.php b/app/Services/Part/PartService.php
index 7ff7aa2..a2c3f35 100644
--- a/app/Services/Part/PartService.php
+++ b/app/Services/Part/PartService.php
@@ -2,6 +2,8 @@
 
 namespace App\Services\Part;
 
+use App\Entities\Equipment\ServerPartEntity;
+use App\Entities\Part\PartEntity;
 use App\Models\CommonModel;
 use App\Services\CommonService;
 
@@ -12,4 +14,38 @@ abstract class PartService extends CommonService
         parent::__construct($model);
         $this->addClassPaths('Part');
     }
+    public function getEntity(string|int|array $where, ?string $message = null): ?PartEntity
+    {
+        return parent::getEntity($where, $message);
+    }
+
+    //서버파트관련 작업
+    public function attachToServerPart(ServerPartEntity $serverPartEntity): mixed
+    {
+        //부품정보가져오기
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if (!$entity) {
+            throw new \Exception("{$serverPartEntity->getPartUID()}에 해당하는 부품정보를 찾을수없습니다.");
+        }
+        //부품정보에 서버정보 설정 및 서비스,고객정보 정의
+        if ($entity->getAvailable() <  $serverPartEntity->getCnt()) {
+            throw new \Exception("현재 사용가능 갯수[{$entity->getAvailable()}]보다 지정하신 갯수({$serverPartEntity->getCnt()})가 더 많습니다.");
+        }
+        return $this->model->modify($entity, ['used' => $entity->getUsed() + $serverPartEntity->getCnt()]);
+    }
+    public function detachFromServerPart(ServerPartEntity $serverPartEntity): mixed
+    {
+        //부품정보가져오기
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if (!$entity) {
+            throw new \Exception("{$serverPartEntity->getPartUID()}에 해당하는 부품정보를 찾을수없습니다.");
+        }
+        //부품정보에 서버정보 설정 및 서비스,고객정보 정의
+        if ($entity->getUsed() < $serverPartEntity->getCnt()) {
+            throw new \Exception("현재 사용된 갯수[{$entity->getUsed()}]보다 지정하신 갯수({$serverPartEntity->getCnt()})가 더 많습니다.");
+        }
+        $entity = $this->model->modify($entity, ['used' => $entity->getUsed() - $serverPartEntity->getCnt()]);
+        // dd($entity);
+        return $entity;
+    }
 }
diff --git a/app/Services/Part/RAMService.php b/app/Services/Part/RAMService.php
index e5941a7..60f302c 100644
--- a/app/Services/Part/RAMService.php
+++ b/app/Services/Part/RAMService.php
@@ -26,6 +26,10 @@ class RAMService extends PartService
     {
         return new RAMDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return RAMEntity::class;
+    }
     public function getFormService(): RAMForm
     {
         if ($this->_form === null) {
@@ -95,7 +99,11 @@ class RAMService extends PartService
     }
     protected function create_process(array $formDatas): RAMEntity
     {
-        return new RAMEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof RAMEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 RAMEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): RAMEntity
     {
@@ -108,4 +116,10 @@ class RAMService extends PartService
     //List 검색용
     //FormFilter 조건절 처리
     //검색어조건절처리
+    //OrderBy 처리
+    public function setOrderBy(mixed $field = null, mixed $value = null): void
+    {
+        $this->model->orderBy('title ASC');
+        parent::setOrderBy($field, $value);
+    }
 }
diff --git a/app/Services/Part/SOFTWAREService.php b/app/Services/Part/SOFTWAREService.php
index 0a34e0e..0ae832d 100644
--- a/app/Services/Part/SOFTWAREService.php
+++ b/app/Services/Part/SOFTWAREService.php
@@ -26,6 +26,10 @@ class SOFTWAREService extends PartService
     {
         return new SOFTWAREDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return SOFTWAREEntity::class;
+    }
     public function getFormService(): SOFTWAREForm
     {
         if ($this->_form === null) {
@@ -95,7 +99,11 @@ class SOFTWAREService extends PartService
     }
     protected function create_process(array $formDatas): SOFTWAREEntity
     {
-        return new SOFTWAREEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof SOFTWAREEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 SOFTWAREEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): SOFTWAREEntity
     {
@@ -108,4 +116,10 @@ class SOFTWAREService extends PartService
     //List 검색용
     //FormFilter 조건절 처리
     //검색어조건절처리
+    //OrderBy 처리
+    public function setOrderBy(mixed $field = null, mixed $value = null): void
+    {
+        $this->model->orderBy('title ASC');
+        parent::setOrderBy($field, $value);
+    }
 }
diff --git a/app/Services/Part/SWITCHService.php b/app/Services/Part/SWITCHService.php
index a679606..c3a1dd8 100644
--- a/app/Services/Part/SWITCHService.php
+++ b/app/Services/Part/SWITCHService.php
@@ -3,6 +3,8 @@
 namespace App\Services\Part;
 
 use App\DTOs\Part\SWITCHDTO;
+use App\Entities\Equipment\ServerEntity;
+use App\Entities\Equipment\ServerPartEntity;
 use App\Entities\Part\SWITCHEntity;
 use App\Forms\Part\SWITCHForm;
 use App\Helpers\Part\SWITCHHelper;
@@ -26,6 +28,10 @@ class SWITCHService extends PartService
     {
         return new SWITCHDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return SWITCHEntity::class;
+    }
     public function getFormService(): SWITCHForm
     {
         if ($this->_form === null) {
@@ -114,7 +120,11 @@ class SWITCHService extends PartService
     }
     protected function create_process(array $formDatas): SWITCHEntity
     {
-        return new SWITCHEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof SWITCHEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 SWITCHEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): SWITCHEntity
     {
@@ -127,4 +137,91 @@ class SWITCHService extends PartService
     //List 검색용
     //FormFilter 조건절 처리
     //검색어조건절처리
+    //OrderBy 처리
+    public function setOrderBy(mixed $field = null, mixed $value = null): void
+    {
+        $this->model->orderBy('code ASC');
+        parent::setOrderBy($field, $value);
+    }
+
+    //서버관련 작업
+    public function attachToServer(ServerEntity $serverEntity, array $formDatas = []): SWITCHEntity
+    {
+        $formDatas = [];
+        $formDatas['clientinfo_uid']  = $serverEntity->getClientInfoUID();
+        $formDatas['serviceinfo_uid'] = $serverEntity->getServiceInfoUID();
+        $formDatas['serverinfo_uid']  = $serverEntity->getPK();
+        $formDatas['status'] = STATUS['OCCUPIED'];
+        if (!array_key_exists('status', $formDatas)) {
+            throw new \Exception(__METHOD__ . ":에서 오류발생: Switch상태가 설정되지 않았습니다.");
+        }
+        //Switch정보에서 해당하는 IP가 있으면 가져와서 사용중인지 체크 후 수정
+        $entity = $this->getEntity($serverEntity->getSwitchInfoUID());
+        if (!$entity instanceof SWITCHEntity) {
+            throw new \Exception("{$serverEntity->getSwitchInfoUID()}에 해당하는 Switch정보를 찾을수없습니다.");
+        }
+        if ($entity->getStatus() !== STATUS['AVAILABLE']) {
+            throw new \Exception(__METHOD__ . ":에서 오류발생: {$serverEntity->getTitle()}는 사용중입니다.");
+        }
+        return $this->model->modify($entity, $formDatas);
+    }
+    public function detachFromServer(ServerEntity $serverEntity): SWITCHEntity
+    {
+        $formDatas                       = [];
+        $formDatas['clientinfo_uid']     = null;
+        $formDatas['serviceinfo_uid']    = null;
+        $formDatas['serverinfo_uid']     = null;
+        $formDatas['old_clientinfo_uid'] = $serverEntity->getClientInfoUID() ?? null;
+        $formDatas['status']             = STATUS['AVAILABLE'];
+        if (!array_key_exists('status', $formDatas)) {
+            throw new \Exception(__METHOD__ . ":에서 오류발생: Switch상태가 설정되지 않았습니다.");
+        }
+        //Switch정보가져오기
+        $entity = $this->getEntity($serverEntity->getSwitchInfoUID());
+        if (!$entity instanceof SWITCHEntity) {
+            throw new \Exception("{$serverEntity->getSwitchInfoUID()}에 해당하는 Switch정보를 찾을수없습니다.");
+        }
+        //Switch정보 수정
+        return $this->model->modify($entity, $formDatas);
+    }
+    //서버파트관련 작업
+    public function attachToServerPart(ServerPartEntity $serverPartEntity): SWITCHEntity
+    {
+        $formDatas = [];
+        $formDatas['clientinfo_uid']  = $serverPartEntity->getClientInfoUID();
+        $formDatas['serviceinfo_uid'] = $serverPartEntity->getServiceInfoUID();
+        $formDatas['serverinfo_uid']  = $serverPartEntity->getServerInfoUID();
+        $formDatas['status'] = STATUS['OCCUPIED'];
+        if (!array_key_exists('status', $formDatas)) {
+            throw new \Exception(__METHOD__ . ":에서 오류발생: Switch상태가 설정되지 않았습니다.");
+        }
+        //SWITCH정보에서 해당하는 SWITCH가 있으면 가져와서 사용중인지 체크 후 수정
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if ($entity instanceof SWITCHEntity) {
+            if ($entity->getStatus() !== STATUS['AVAILABLE']) {
+                throw new \Exception(__METHOD__ . ":에서 오류발생: {$entity->getTitle()}는 사용중입니다.");
+            }
+            $entity = $this->model->modify($entity, $formDatas);
+        }
+        return $entity;
+    }
+    public function detachFromServerPart(ServerPartEntity $serverPartEntity): SWITCHEntity
+    {
+        $formDatas = [];
+        $formDatas['clientinfo_uid']  = null;
+        $formDatas['serviceinfo_uid'] = null;
+        $formDatas['serverinfo_uid']  = null;
+        $formDatas['old_clientinfo_uid']  = $serverPartEntity->getClientInfoUID() ?? null;
+        $formDatas['status'] = STATUS['AVAILABLE'];
+        if (!array_key_exists('status', $formDatas)) {
+            throw new \Exception(__METHOD__ . ":에서 오류발생: Switch상태가 설정되지 않았습니다.");
+        }
+        //Switch정보가져와서 있으면 수정
+        $entity = $this->getEntity($serverPartEntity->getPartUID());
+        if (!$entity instanceof SWITCHEntity) {
+            throw new \Exception("{$serverPartEntity->getPartUID()}에 해당하는 Switch정보를 찾을수없습니다.");
+        }
+        //Switch정보 수정
+        return $this->model->modify($entity, $formDatas);
+    }
 }
diff --git a/app/Services/PaymentService.php b/app/Services/PaymentService.php
index 28644f2..7558d35 100644
--- a/app/Services/PaymentService.php
+++ b/app/Services/PaymentService.php
@@ -25,6 +25,10 @@ class PaymentService extends CommonService
     {
         return PaymentDTO::class;
     }
+    public function getEntityClass(): string
+    {
+        return PaymentEntity::class;
+    }
     public function createDTO(array $formDatas): PaymentDTO
     {
         return new PaymentDTO($formDatas);
@@ -130,11 +134,19 @@ class PaymentService extends CommonService
     }
     protected function create_process(array $formDatas): PaymentEntity
     {
-        return new PaymentEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof PaymentEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 PaymentEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): PaymentEntity
     {
-        return parent::modify_process($uid, $formDatas);
+        $entity = parent::modify_process($uid, $formDatas);
+        if (!$entity instanceof PaymentEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 PaymentEntity만 가능");
+        }
+        return $entity;
     }
     //List 검색용
     //FormFilter 조건절 처리
diff --git a/app/Services/UserService.php b/app/Services/UserService.php
index 81361c2..d4ba41e 100644
--- a/app/Services/UserService.php
+++ b/app/Services/UserService.php
@@ -26,6 +26,10 @@ class UserService extends CommonService
     {
         return new UserDTO($formDatas);
     }
+    public function getEntityClass(): string
+    {
+        return UserEntity::class;
+    }
     public function getFormService(): UserForm
     {
         if ($this->_form === null) {
@@ -102,7 +106,11 @@ class UserService extends CommonService
         if (isset($formDatas['confirmpassword'])) {
             unset($formDatas['confirmpassword']);
         }
-        return new UserEntity($formDatas);
+        $entity = parent::create_process($formDatas);
+        if (!$entity instanceof UserEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 UserEntity만 가능");
+        }
+        return $entity;
     }
     protected function modify_process($uid, array $formDatas): UserEntity
     {
@@ -110,7 +118,11 @@ class UserService extends CommonService
         if (isset($formDatas['confirmpassword'])) {
             unset($formDatas['confirmpassword']);
         }
-        return parent::modify_process($uid, $formDatas);
+        $entity = parent::modify_process($uid, $formDatas);
+        if (!$entity instanceof UserEntity) {
+            throw new RuntimeException(__METHOD__ . "에서 오류발생:Return Type은 UserEntity만 가능");
+        }
+        return $entity;
     }
     //List 검색용
     //FormFilter 조건절 처리