diff --git a/src/controllers/PositionController.ts b/src/controllers/PositionController.ts
index 97cd50cb..a32c95c1 100644
--- a/src/controllers/PositionController.ts
+++ b/src/controllers/PositionController.ts
@@ -413,35 +413,35 @@ export class PositionController extends Controller {
       orgRoot = await this.orgRootRepository.findOne({
         where: { id: requestBody.orgRootId },
       });
-    SName = orgRoot.shortName;
+    SName = orgRoot.orgRootShortName;
     if (!orgRoot) {
       let orgChild1: any = null;
       if (requestBody.orgChild1Id != null)
         orgChild1 = await this.child1Repository.findOne({
           where: { id: requestBody.orgChild1Id },
         });
-      SName = orgChild1.shortName;
+      SName = orgChild1.orgChild1ShortName;
       if (!orgChild1) {
         let orgChild2: any = null;
         if (requestBody.orgChild2Id != null)
           orgChild2 = await this.child2Repository.findOne({
             where: { id: requestBody.orgChild2Id },
           });
-        SName = orgChild2.shortName;
+        SName = orgChild2.orgChild2ShortName;
         if (!orgChild2) {
           let orgChild3: any = null;
           if (requestBody.orgChild3Id != null)
             orgChild3 = await this.child3Repository.findOne({
               where: { id: requestBody.orgChild3Id },
             });
-          SName = orgChild3.shortName;
+          SName = orgChild3.orgChild3ShortName;
           if (!orgChild3) {
             let orgChild4: any = null;
             if (requestBody.orgChild4Id != null)
               orgChild4 = await this.child4Repository.findOne({
                 where: { id: requestBody.orgChild4Id },
               });
-            SName = orgChild4.shortName;
+            SName = orgChild4.orgChild4ShortName;
             if (!orgChild4) {
               throw new HttpError(HttpStatusCode.NOT_FOUND, "ไม่พบข้อมูลโครงสร้าง");
             } else {
@@ -696,35 +696,35 @@ export class PositionController extends Controller {
       orgRoot = await this.orgRootRepository.findOne({
         where: { id: requestBody.orgRootId },
       });
-    SName = orgRoot.shortName;
+    SName = orgRoot.orgRootShortName;
     if (!orgRoot) {
       let orgChild1: any = null;
       if (requestBody.orgChild1Id != null)
         orgChild1 = await this.child1Repository.findOne({
           where: { id: requestBody.orgChild1Id },
         });
-      SName = orgChild1.shortName;
+      SName = orgChild1.orgChild1ShortName;
       if (!orgChild1) {
         let orgChild2: any = null;
         if (requestBody.orgChild2Id != null)
           orgChild2 = await this.child2Repository.findOne({
             where: { id: requestBody.orgChild2Id },
           });
-        SName = orgChild2.shortName;
+        SName = orgChild2.orgChild2ShortName;
         if (!orgChild2) {
           let orgChild3: any = null;
           if (requestBody.orgChild3Id != null)
             orgChild3 = await this.child3Repository.findOne({
               where: { id: requestBody.orgChild3Id },
             });
-          SName = orgChild3.shortName;
+          SName = orgChild3.orgChild3ShortName;
           if (!orgChild3) {
             let orgChild4: any = null;
             if (requestBody.orgChild4Id != null)
               orgChild4 = await this.child4Repository.findOne({
                 where: { id: requestBody.orgChild4Id },
               });
-            SName = orgChild4.shortName;
+            SName = orgChild4.orgChild4ShortName;
             if (!orgChild4) {
               throw new HttpError(HttpStatusCode.NOT_FOUND, "ไม่พบข้อมูลโครงสร้าง");
             } else {
@@ -758,6 +758,23 @@ export class PositionController extends Controller {
       posMaster.orgRevisionId = orgRoot.orgRevisionId;
     }
 
+    const chk_SName0 = await this.posMasterRepository.findOne({
+      where: {
+        orgRevisionId: posMaster.orgRevisionId,
+        orgRoot: { orgRootShortName: SName },
+        orgChild1Id: IsNull(),
+        posMasterNo: requestBody.posMasterNo,
+        id: Not(posMaster.id),
+      },
+      relations: ["orgRoot"],
+    });
+    if (chk_SName0 != null) {
+      throw new HttpError(
+        HttpStatusCode.INTERNAL_SERVER_ERROR,
+        "ไม่สามารถใส่เลขที่ตำแหน่งซ้ำกันได้",
+      );
+    }
+
     const chk_SName1 = await this.posMasterRepository.findOne({
       where: {
         orgRevisionId: posMaster.orgRevisionId,