diff --git a/cmd/main-migration/migrations/20251119063438.sql b/cmd/main-migration/migrations/20251119063438.sql
new file mode 100644
index 00000000..1d67246e
--- /dev/null
+++ b/cmd/main-migration/migrations/20251119063438.sql
@@ -0,0 +1,4 @@
+-- Modify "Person" table
+ALTER TABLE "public"."Person" DROP CONSTRAINT "uni_Person_ResidentIdentityNumber", ALTER COLUMN "ResidentIdentityNumber" TYPE text;
+-- Create index "idx_resident_identity" to table: "Person"
+CREATE UNIQUE INDEX "idx_resident_identity" ON "public"."Person" ("ResidentIdentityNumber") WHERE ("DeletedAt" IS NULL);
diff --git a/cmd/main-migration/migrations/atlas.sum b/cmd/main-migration/migrations/atlas.sum
index 4898eefa..7d7f66ee 100644
--- a/cmd/main-migration/migrations/atlas.sum
+++ b/cmd/main-migration/migrations/atlas.sum
@@ -1,4 +1,4 @@
-h1:vOoMJhDkNM1zFHHQLD+cHi5Xz/K4Bnv0bSNVF8IjdLs=
+h1:UhULOHIbuhMYkKVWh97sQJdSpsgfHegvn8gwivFk6YQ=
 20250904105930.sql h1:MEM6blCgke9DzWQSTnLzasbPIrcHssNNrJqZpSkEo6k=
 20250904141448.sql h1:J8cmYNk4ZrG9fhfbi2Z1IWz7YkfvhFqTzrLFo58BPY0=
 20250908062237.sql h1:Pu23yEW/aKkwozHoOuROvHS/GK4ngARJGdO7FB7HZuI=
@@ -120,3 +120,4 @@ h1:vOoMJhDkNM1zFHHQLD+cHi5Xz/K4Bnv0bSNVF8IjdLs=
 20251114062746.sql h1:FInLaEFQByESEwFJKuKnuUSTKmcDpi3ZXaxkKwz2+D8=
 20251117005942.sql h1:wD3BWrUSmo1HlW16V3lkaBkJvbAZ0fNk77te7J9NhOc=
 20251117075427.sql h1:TqU9VKZa3I8YNXUGQWY3WVBYN+1FvyyaKy0hB1jgAho=
+20251119063438.sql h1:7BCr8Pr2doQT2BmsKYpyGa7gap4pWH711vClDw/VQ6s=
diff --git a/internal/domain/main-entities/person/entity.go b/internal/domain/main-entities/person/entity.go
index d6e6744a..aa00e6f9 100644
--- a/internal/domain/main-entities/person/entity.go
+++ b/internal/domain/main-entities/person/entity.go
@@ -25,7 +25,7 @@ type Person struct {
 	BirthRegency_Code        *string                `json:"birthRegency_code" gorm:"size:4"`
 	BirthRegency             *er.Regency            `json:"birthRegency,omitempty" gorm:"foreignKey:BirthRegency_Code;references:Code"`
 	Gender_Code              *erp.GenderCode        `json:"gender_code" gorm:"size:10"`
-	ResidentIdentityNumber   *string                `json:"residentIdentityNumber" gorm:"unique;size:16"`
+	ResidentIdentityNumber   *string                `json:"residentIdentityNumber" gorm:"uniqueIndex:idx_resident_identity,where:\"DeletedAt\" IS NULL"`
 	PassportNumber           *string                `json:"passportNumber" gorm:"unique;size:20"`
 	DrivingLicenseNumber     *string                `json:"drivingLicenseNumber" gorm:"unique;size:20"`
 	Religion_Code            *erp.ReligionCode      `json:"religion_code" gorm:"size:10"`