diff --git a/packages/taler-wallet-core/src/TalerErrorCode.ts b/packages/taler-wallet-core/src/TalerErrorCode.ts
index 1557007f4..fd3ca1fc8 100644
--- a/packages/taler-wallet-core/src/TalerErrorCode.ts
+++ b/packages/taler-wallet-core/src/TalerErrorCode.ts
@@ -3146,6 +3146,13 @@ export enum TalerErrorCode {
    */
   WALLET_WITHDRAW_RESERVE_UNKNOWN_AT_EXCHANGE = 7010,
 
+  /**
+   * The wallet core service is not available.
+   * Returned with an HTTP status code of #MHD_HTTP_UNINITIALIZED (0).
+   * (A value of 0 indicates that the error is generated client-side).
+   */
+  WALLET_CORE_NOT_AVAILABLE = 7011,
+
   /**
    * End of error code range.
    * Returned with an HTTP status code of #MHD_HTTP_UNINITIALIZED (0).