If you have a primary Replication Server version 12.0 or 12.1 that you plan to upgrade to version 15.0 and you have a replicate Replication Server already upgraded to version 15.0, use the Upgrade Route option in Replication Manager instead of the rs_fast_route_upgrade stored procedure to upgrade the related route to the replicate Replication Server.
In Replication Manager, right-click on the Replication Server object containing the route to be upgraded, select the Upgrade Route option, select the route to be upgraded from the dialog box that appears, and select Upgrade.
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 1500 even if your primary Replication Server has not yet been upgraded to version 15.0.
If this applies to your replication system and you are upgrading to Replication Server version 15.0, the upgrade script stops and tells you to fix the route version before upgrading to version 15.0.
