diff --git a/docs/en/13-operation/03-tolerance.md b/docs/en/13-operation/03-tolerance.md
index ba9d5d75e3415ba0a7a4e1c579327b9f73e2a48f..21a5a902822d7b85f555114a112686d4e35c64aa 100644
--- a/docs/en/13-operation/03-tolerance.md
+++ b/docs/en/13-operation/03-tolerance.md
@@ -27,4 +27,4 @@ The number of dnodes in a TDengine cluster must NOT be lower than the number of
 
 As long as the dnodes of a TDengine cluster are deployed on different physical machines and the replica number is higher than 1, high availability can be achieved without any other assistance. For disaster recovery, dnodes of a TDengine cluster should be deployed in geographically different data centers.
 
-Alternatively, you can use taosX to synchronize the data from one TDengine cluster to another cluster in a remote location. For more information, see [taosX](../../reference/taosX).
+Alternatively, you can use taosX to synchronize the data from one TDengine cluster to another cluster in a remote location. However, taosX is only available in TDengine enterprise version, for more information please contact tdengine.com.