diff --git a/projects/ucap-webmessenger-daesang/src/lib/services/daesang-cipher.service.ts b/projects/ucap-webmessenger-daesang/src/lib/services/daesang-cipher.service.ts
index d5d81d96..fb231098 100644
--- a/projects/ucap-webmessenger-daesang/src/lib/services/daesang-cipher.service.ts
+++ b/projects/ucap-webmessenger-daesang/src/lib/services/daesang-cipher.service.ts
@@ -53,7 +53,8 @@ export class DaesangCipherService {
   encryptForSapErp(pvUserKey: string, employeeNum: string): string {
     // const txt = '20200221090321_asdfghjk'; // 1QgLAiLqJ6Uo6bE4Qk1o3Yd6mfqxXSnmqXX%2FXLL7DoA%3D
     // const txt = '20200221101444_asdfghjk'; // Lz1TIdGTQQMui%2BBHMdj8fatYYhXbwJEL%2BJ91C7jUWEs%3D
-    const str = moment().format('YYYYMMDDHHmmss') + '_' + employeeNum;
+    const str =
+      moment().format('YYYYMMDDHHmmss') + '_' + employeeNum.toUpperCase();
     const secretKeyToByteArray: Buffer = Buffer.from(pvUserKey, 'utf8').slice(
       0,
       16