diff --git a/src/controllers/09-debit-note-controller.ts b/src/controllers/09-debit-note-controller.ts
index 8c817aa..36fa432 100644
--- a/src/controllers/09-debit-note-controller.ts
+++ b/src/controllers/09-debit-note-controller.ts
@@ -843,7 +843,11 @@ export class DebitNoteActionController extends Controller {
   @Post("accept")
   @Security("keycloak", MANAGE_ROLES)
   async acceptDebitNote(@Request() req: RequestWithUser, @Path() debitNoteId: string) {
-    await this.#checkPermission(req.user, debitNoteId);
+    const record = await this.#checkPermission(req.user, debitNoteId);
+
+    if (record.quotationStatus !== QuotationStatus.Issued) {
+      throw new HttpError(HttpStatus.BAD_REQUEST, "Already Accepted", "debitNoteAlreadyAccept");
+    }
     return await prisma.quotation.update({
       where: { id: debitNoteId },
       data: { quotationStatus: QuotationStatus.Accepted },