diff --git a/src/include/taler_error_codes.h b/src/include/taler_error_codes.h
index ac185ec0d..a8dea6a37 100644
--- a/src/include/taler_error_codes.h
+++ b/src/include/taler_error_codes.h
@@ -1388,6 +1388,12 @@ enum TALER_ErrorCode
    */
   TALER_EC_TIP_AUTHORIZE_DB_SOFT_ERROR = 2706,
 
+  /**
+   * The reserve that was used to fund the tips was never enabled.
+   * Returned with an HTTP status code of "not found".
+   */
+  TALER_EC_TIP_AUTHORIZE_RESERVE_NOT_ENABLED = 2702,
+  
   /**
    * The backend had trouble accessing the database to persist
    * information about enabling tips.