diff --git a/cmd/main-migration/migrations/20251120005512.sql b/cmd/main-migration/migrations/20251120005512.sql
new file mode 100644
index 00000000..8fd4b6af
--- /dev/null
+++ b/cmd/main-migration/migrations/20251120005512.sql
@@ -0,0 +1,2 @@
+-- Modify "McuOrderItem" table
+ALTER TABLE "public"."McuOrderItem" ADD COLUMN "Note" character varying(1024) NULL;
diff --git a/cmd/main-migration/migrations/atlas.sum b/cmd/main-migration/migrations/atlas.sum
index e4ce72b0..9f7c1d2e 100644
--- a/cmd/main-migration/migrations/atlas.sum
+++ b/cmd/main-migration/migrations/atlas.sum
@@ -1,4 +1,4 @@
-h1:8gw1BB9DWz+cNATJjG1oMXA+QAF1HrIw47xjbI33aC4=
+h1:NZkNXHrJksgpcktPStE4yM6IBy+NgX8X6cY2ffSLCDU=
 20250904105930.sql h1:MEM6blCgke9DzWQSTnLzasbPIrcHssNNrJqZpSkEo6k=
 20250904141448.sql h1:J8cmYNk4ZrG9fhfbi2Z1IWz7YkfvhFqTzrLFo58BPY0=
 20250908062237.sql h1:Pu23yEW/aKkwozHoOuROvHS/GK4ngARJGdO7FB7HZuI=
@@ -119,9 +119,4 @@ h1:8gw1BB9DWz+cNATJjG1oMXA+QAF1HrIw47xjbI33aC4=
 20251113120533.sql h1:f3/U1Ve2yF2zSMhkt+xtwF8wUYfUKYwgbNeGfE37EW4=
 20251114062746.sql h1:FInLaEFQByESEwFJKuKnuUSTKmcDpi3ZXaxkKwz2+D8=
 20251117005942.sql h1:wD3BWrUSmo1HlW16V3lkaBkJvbAZ0fNk77te7J9NhOc=
-20251117075427.sql h1:TqU9VKZa3I8YNXUGQWY3WVBYN+1FvyyaKy0hB1jgAho=
-20251118074929.sql h1:p1KsWqCuR1JXA/jVO5BmOhCcaQ8clT7t0YRszAhPFbg=
-20251119063438.sql h1:NVGM0X/LHD37EaPl8SNzkNiZDJ7AB1QR+LLwLh6WRdg=
-20251119065730.sql h1:U5lzk1WvMB0bw3kwckou7jkEt4bwdYItwHr2Vxqe7w4=
-20251119072302.sql h1:8L+NsXPFXGZDQZIOhShvuBM9aLwU3h95tXnz6jxHhlA=
-20251119072450.sql h1:ksTc8ljaHFrBo1/HiHtcnT+iJ7kPS93KgetFTf3p4Qc=
+20251120005512.sql h1:gd0rKVlIHXbOQ6J3Bl6NTiZ6fF3GQdobgAUVXW455wI=
diff --git a/internal/domain/main-entities/mcu-order-item/base/entity.go b/internal/domain/main-entities/mcu-order-item/base/entity.go
new file mode 100644
index 00000000..dcfb0625
--- /dev/null
+++ b/internal/domain/main-entities/mcu-order-item/base/entity.go
@@ -0,0 +1,20 @@
+package mcuorderitem
+
+import (
+	ecore "simrs-vx/internal/domain/base-entities/core"
+	ems "simrs-vx/internal/domain/main-entities/mcu-src"
+	"time"
+
+	erc "simrs-vx/internal/domain/references/common"
+)
+
+type McuOrderItem struct {
+	ecore.Main                         // adjust this according to the needs
+	McuOrder_Id     *uint              `json:"mcuOrder_id" gorm:"uniqueIndex:idx_order_src"`
+	McuSrc_Code     *string            `json:"mcuSrc_code" gorm:"uniqueIndex:idx_order_src"`
+	McuSrc          *ems.McuSrc        `json:"mcuSrc,omitempty" gorm:"foreignKey:McuSrc_Code;references:Code"`
+	ExaminationDate *time.Time         `json:"examinationDate"`
+	Note            *string            `json:"note" gorm:"size:1024"`
+	Result          *string            `json:"result"`
+	Status_Code     erc.DataStatusCode `json:"status_code"`
+}
diff --git a/internal/domain/main-entities/mcu-order-item/entity.go b/internal/domain/main-entities/mcu-order-item/entity.go
index 97384243..48a57bac 100644
--- a/internal/domain/main-entities/mcu-order-item/entity.go
+++ b/internal/domain/main-entities/mcu-order-item/entity.go
@@ -1,23 +1,15 @@
 package mcuorderitem
 
 import (
-	ecore "simrs-vx/internal/domain/base-entities/core"
 	emo "simrs-vx/internal/domain/main-entities/mcu-order"
-	ems "simrs-vx/internal/domain/main-entities/mcu-src"
-	"time"
+	emoib "simrs-vx/internal/domain/main-entities/mcu-order-item/base"
 
 	erc "simrs-vx/internal/domain/references/common"
 )
 
 type McuOrderItem struct {
-	ecore.Main                         // adjust this according to the needs
-	McuOrder_Id     *uint              `json:"mcuOrder_id" gorm:"uniqueIndex:idx_order_src"`
-	McuOrder        *emo.McuOrder      `json:"mcuOrder,omitempty" gorm:"foreignKey:McuOrder_Id;references:Id"`
-	McuSrc_Code     *string            `json:"mcuSrc_code" gorm:"uniqueIndex:idx_order_src"`
-	McuSrc          *ems.McuSrc        `json:"mcuSrc,omitempty" gorm:"foreignKey:McuSrc_Code;references:Code"`
-	ExaminationDate *time.Time         `json:"examinationDate"`
-	Result          *string            `json:"result"`
-	Status_Code     erc.DataStatusCode `json:"status_code"`
+	emoib.McuOrderItem
+	McuOrder *emo.McuOrder `json:"mcuOrder,omitempty" gorm:"foreignKey:McuOrder_Id;references:Id"`
 }
 
 func (d McuOrderItem) IsCompleted() bool {