Oracle Golden Gate error 00146

I am deploying Oracle Golden Gate to sync data from Sql Server 2008 to Sql Server 2008. One of the extract process have stopped.This is the error:

2014-12-21 17:22:09  ERROR   OGG-00146  Call to VAMRead returned with error stat
us 600: VAM Client Report <[mssqlvam::CGGSApi::PartialUpdateOperation] Updates a
re not supported on tables that do not have TRANDATA added. TranId: 0000:001b210
9, Table: "dbo"."Sys_MaxKey">.

I try to use command:

add trandata Sys_MaxKey

but the problem still exists,and i can’t start ext002 (extract process name).