diff --git a/src/app/(main)/report/grnReportApi.ts b/src/app/(main)/report/grnReportApi.ts
index 92d674c..4e4eec7 100644
--- a/src/app/(main)/report/grnReportApi.ts
+++ b/src/app/(main)/report/grnReportApi.ts
@@ -34,6 +34,8 @@ export interface GrnReportRow {
   grnCode?: string;
   /** M18 record id (m18_record_id) */
   grnId?: number | string;
+  /** From purchase_order.m18CreatedUId; e.g. "2569 (legato)" */
+  poM18CreatorDisplay?: string;
   [key: string]: unknown;
 }
 
@@ -149,6 +151,7 @@ function toExcelRow(
   }
   base["GRN Code / M18 入倉單號"] = r.grnCode ?? "";
   base["GRN Id / M18 記錄編號"] = r.grnId ?? "";
+  base["PO建立者(M18) / PO creator (M18)"] = r.poM18CreatorDisplay ?? "";
   return base;
 }