diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 4c58f17..0eb7b3d 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -1246,7 +1246,6 @@ model QuotationWorker {
   id String @id @default(cuid())
 
   no          Int
-  code        String
   employee    Employee  @relation(fields: [employeeId], references: [id])
   employeeId  String
   quotation   Quotation @relation(fields: [quotationId], references: [id], onDelete: Cascade)
diff --git a/src/controllers/05-quotation-controller.ts b/src/controllers/05-quotation-controller.ts
index 75af8e1..ba1ad9a 100644
--- a/src/controllers/05-quotation-controller.ts
+++ b/src/controllers/05-quotation-controller.ts
@@ -503,12 +503,11 @@ export class QuotationController extends Controller {
           ...rest,
           ...price,
           statusOrder: +(rest.status === "INACTIVE"),
-          code: `${currentYear.toString().padStart(2, "0")}${currentMonth.toString().padStart(2, "0")}${currentDate.toString().padStart(2, "0")}${lastQuotation.value.toString().padStart(4, "0")}`,
+          code: `QT${currentYear.toString().padStart(2, "0")}${currentMonth.toString().padStart(2, "0")}${currentDate.toString().padStart(2, "0")}${lastQuotation.value.toString().padStart(4, "0")}`,
           worker: {
             createMany: {
               data: sortedEmployeeId.map((v, i) => ({
                 no: i,
-                code: "",
                 employeeId: v,
               })),
             },
@@ -753,7 +752,6 @@ export class QuotationController extends Controller {
                     skipDuplicates: true,
                     data: sortedEmployeeId.map((v, i) => ({
                       no: i,
-                      code: "",
                       employeeId: v,
                     })),
                   },