diff --git a/src/controllers/SalaryPeriodController.ts b/src/controllers/SalaryPeriodController.ts
index 4e66213..e9cf4cf 100644
--- a/src/controllers/SalaryPeriodController.ts
+++ b/src/controllers/SalaryPeriodController.ts
@@ -2154,7 +2154,7 @@ export class SalaryPeriodController extends Controller {
       }
     }
     let revisionId = await new CallAPI().GetData(request, "/org/unauthorize/revision/latest");
-
+    let _null:any = null;
     const beforeSalaryPeriod = structuredClone(salaryPeriod);
     salaryPeriod.revisionId = revisionId;
     salaryPeriod.lastUpdateUserId = request.user.sub;
@@ -2172,7 +2172,7 @@ export class SalaryPeriodController extends Controller {
         salaryOrgNew.salaryPeriodId = salaryPeriod.id;
         salaryOrgNew.status = "PENDING";
         salaryOrgNew.rootId = root.rootId;
-        salaryOrgNew.rootDnaId = root.rootDnaId;
+        salaryOrgNew.rootDnaId = root.rootDnaId??_null;
         salaryOrgNew.root = root.root;
         salaryOrgNew.revisionId = salaryPeriod.revisionId;
         salaryOrgNew.snapshot = snapshot;
diff --git a/src/entities/SalaryOrg.ts b/src/entities/SalaryOrg.ts
index 48d36cc..6fa0a89 100644
--- a/src/entities/SalaryOrg.ts
+++ b/src/entities/SalaryOrg.ts
@@ -23,6 +23,7 @@ export class SalaryOrg extends EntityBase {
   rootId: string;
 
   @Column({
+    nullable: true,
     comment: "คีย์นอก(FK)ของตาราง orgRoot Dna",
     length: 40,
   })