Replication Agent for Microsoft SQL Server can be downgraded from version 15.5 to version 15.2 ESD #2. Downgrading may be necessary if the upgrade process fails. A downgrade may also be necessary if replication fails after the upgrade process has completed, such as when new features fail to function as expected, or for any of the following reasons:
Changes to DDL and how DDL is handled by Replication Agent
Changes to the format of the origin queue ID (OQID)
Changes to the content or structure of the Replication Agent System Database (RASD)
Changes to Replication Agent system objects in the primary database
If you are using any new features from Replication Agent 15.5, downgrading is not supported. For a list of the new features for Replication Agent 15.5, see the Replication Agent New Features.
