The source server has attempted to update it's server validation key on the target server. An error occurred that prevented the source server from updating the target server.
The operation fails.
On the target server, determine the cause of the problem and correct it. It may be necessary for an administrator to correct the keys with the following actions. On the source server, issue the UPDATE SERVER command with FORCESYNC=YES to cause an attempt to synchronize the keys on both the source and target servers. Retry the failing operation.