Cause
This is an internal error that is returned to the SDS secondary database to halt tracking at the version upgrade boundary when a version mismatch exists. It is never returned to a user application. The following messages are written to your JADE messages (jommsg.log) log file.
SDS: Secondary upgrade version mismatch: tracking will now halt
SDS: Upgrade to the same software release level as the primary and restart server
Action
Upgrade to the same software release level as the primary and then restart the server.