diff --git a/backend-node/src/types/externalRestApiTypes.ts b/backend-node/src/types/externalRestApiTypes.ts
index 01e71623..112e7aeb 100644
--- a/backend-node/src/types/externalRestApiTypes.ts
+++ b/backend-node/src/types/externalRestApiTypes.ts
@@ -50,10 +50,11 @@ export interface ExternalRestApiConnection {
     dbHeaderTemplate?: string;
 
     // Wehago / Amaranth (RPS ERP) — 매 요청 HMAC-SHA256 서명
+    // accessToken 은 위 OAuth2 섹션과 공유 (둘 다 Bearer-style 토큰)
     callerName?: string;
-    accessToken?: string;
     hashKey?: string;
     groupSeq?: string;
+    aesKey?: string;
   };
   timeout?: number;
   retry_count?: number;