diff --git a/src/app/api/pickOrder/actions.ts b/src/app/api/pickOrder/actions.ts
index 9cdc773..44287e6 100644
--- a/src/app/api/pickOrder/actions.ts
+++ b/src/app/api/pickOrder/actions.ts
@@ -208,6 +208,8 @@ export interface PickExecutionIssueData {
   missQty: number;
   badItemQty: number;
   badPackageQty?: number;
+  /** Optional: frontend-only reference to stock_out_line.id for the picked lot. */
+  stockOutLineId?: number;
   issueRemark: string;
   pickerName: string;
   handledBy?: number;