all MAINTENANCE server functions documented, minor function changes
diff --git a/src/messages_p.h b/src/messages_p.h
index 36f5562..e43c428 100644
--- a/src/messages_p.h
+++ b/src/messages_p.h
@@ -75,6 +75,13 @@
     struct lyd_node *tree;   /**< libyang data tree of the message (NETCONF operation) */
 };
 
+struct nc_client_reply_error {
+    NC_RPL type;
+    struct nc_err *err;
+    uint32_t count;
+    struct ly_ctx *ctx;
+};
+
 struct nc_rpc {
     NC_RPC_TYPE type;
 };