diff --git a/cmd/main-migration/migrations/atlas.sum b/cmd/main-migration/migrations/atlas.sum
index dc21429b..dedb750a 100644
--- a/cmd/main-migration/migrations/atlas.sum
+++ b/cmd/main-migration/migrations/atlas.sum
@@ -1,4 +1,4 @@
-h1:kkT6c88mNI2KVSF5h2r1qdgxouqRlqt6scn0lhxl9+Q=
+h1:jZ9sh96fN1qtT2OItPgP+Anzvi92I1twBDGmU2RWlVU=
 20250904105930.sql h1:MEM6blCgke9DzWQSTnLzasbPIrcHssNNrJqZpSkEo6k=
 20250904141448.sql h1:J8cmYNk4ZrG9fhfbi2Z1IWz7YkfvhFqTzrLFo58BPY0=
 20250908062237.sql h1:Pu23yEW/aKkwozHoOuROvHS/GK4ngARJGdO7FB7HZuI=
@@ -21,4 +21,4 @@ h1:kkT6c88mNI2KVSF5h2r1qdgxouqRlqt6scn0lhxl9+Q=
 20250929034428.sql h1:i+pROD9p+g5dOmmZma6WF/0Hw5g3Ha28NN85iTo1K34=
 20250930025550.sql h1:+F+CsCUXD/ql0tHGEow70GhPBX1ZybVn+bh/T4YMh7Y=
 20250930140351.sql h1:9AAEG1AnOAH+o0+oHL5G7I8vqlWOhwRlCGyyCpT/y1Q=
-20251002085604.sql h1:ml+jTtNkj5T12/loEW77jMScHbt+XAx4mN80heqo7+Q=
+20251002085604.sql h1:3xZ68eYp4urXRnvotNH1XvG2mYOSDV/j3zHEZ/txg5E=
diff --git a/internal/domain/main-entities/division/dto.go b/internal/domain/main-entities/division/dto.go
index e8ba2d97..43406e34 100644
--- a/internal/domain/main-entities/division/dto.go
+++ b/internal/domain/main-entities/division/dto.go
@@ -5,15 +5,15 @@ import (
 )
 
 type CreateDto struct {
-	Code      string `json:"code" validate:"maxLength=10"`
-	Name      string `json:"name" validate:"maxLength=50"`
-	Parent_Id *int16 `json:"parent_id"`
+	Code      string  `json:"code" validate:"maxLength=10"`
+	Name      string  `json:"name" validate:"maxLength=50"`
+	Parent_Id *uint16 `json:"parent_id"`
 }
 
 type ReadListDto struct {
-	Code      string `json:"code"`
-	Name      string `json:"name"`
-	Parent_Id *int16 `json:"parent_id"`
+	Code      string  `json:"code"`
+	Name      string  `json:"name"`
+	Parent_Id *uint16 `json:"parent_id"`
 
 	Page         int `json:"page"`
 	PageSize     int `json:"page_size"`
@@ -42,9 +42,9 @@ type MetaDto struct {
 
 type ResponseDto struct {
 	ecore.SmallMain
-	Code      string `json:"code"`
-	Name      string `json:"name"`
-	Parent_Id *int16 `json:"parent_id"`
+	Code      string  `json:"code"`
+	Name      string  `json:"name"`
+	Parent_Id *uint16 `json:"parent_id"`
 }
 
 func (d Division) ToResponse() ResponseDto {
diff --git a/internal/domain/main-entities/division/entity.go b/internal/domain/main-entities/division/entity.go
index 5585d8a2..2aa6c8dd 100644
--- a/internal/domain/main-entities/division/entity.go
+++ b/internal/domain/main-entities/division/entity.go
@@ -8,7 +8,7 @@ type Division struct {
 	ecore.SmallMain            // adjust this according to the needs
 	Code            string     `json:"code" gorm:"unique;size:10"`
 	Name            string     `json:"name" gorm:"size:50"`
-	Parent_Id       *int16     `json:"parent_id"`
+	Parent_Id       *uint16    `json:"parent_id"`
 	Parent          *Division  `gorm:"foreignKey:Parent_Id;references:Id"`
 	Childrens       []Division `gorm:"foreignKey:Parent_Id"` // may need references to self
 }