If you have a primary Replication Server version 12.0 or 12.1 that you plan to upgrade to version 12.6 and you have a replicate Replication Server already upgraded to version 12.6, use route_upgrade in the Replication Server Manager instead of the rs_fast_route_upgrade stored procedure to upgrade the related route to the replicate Replication Server.
A route version should reflect the lower value between the site version of your primary Replication Server and the site version of your replicate Replication Server. For example, if the site version of your primary Replication Server is 12.1 and the site version of your replicate Replication Server is 12.0, the route version should be 1200.
However, the version of rs_fast_route_upgrade provided in Replication Server version 12.1 and earlier erroneously sets the route version to the higher value. For this reason, the earlier version of rs_fast_route_upgrade automatically upgrades the route version to 1260 even if your primary Replication Server has not yet been upgraded to version 12.6.
If this applies to your replication system and you are upgrading to Replication Server version 12.6, the upgrade script stops and tells you to fix the route version before upgrading to version 12.6.
