From ebe53a6647b0b7687eb97a557a951c736cd88352 Mon Sep 17 00:00:00 2001
From: foesa <35463247+foesa-yang@users.noreply.github.com>
Date: Fri, 8 Oct 2021 15:32:28 +0800
Subject: [PATCH] Update ex-ug-FAQ.md

---
 docs-2.0/nebula-exchange/ex-ug-FAQ.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs-2.0/nebula-exchange/ex-ug-FAQ.md b/docs-2.0/nebula-exchange/ex-ug-FAQ.md
index 18467f00eb4..ae2a7437cf0 100644
--- a/docs-2.0/nebula-exchange/ex-ug-FAQ.md
+++ b/docs-2.0/nebula-exchange/ex-ug-FAQ.md
@@ -78,6 +78,10 @@ nebula-exchange-2.0.0.jar \
 
     - Storage服务可用的端口号有33183、33177、33185。
 
+### 运行时报错`Exception in thread "main" com.facebook.thrift.protocol.TProtocolException: The field 'code' has been assigned the invalid value -4`
+
+检查 Exchange 版本与 Nebula Graph 版本是否匹配，详细信息可参考[使用限制](../nebula-exchange/about-exchange/ex-ug-limitations.md)。
+
 ## 配置问题
 
 ### 哪些配置项影响导入性能？