Return
-
Title
Error adding agent to replication from Core 1 to 3 after it was replicated already from 2 to 3 -
Description
Agent was replicated from Core 1 to Core 2, then from Core 2 to 3. Attempt to add replication for the same agent from Core 1 to 3 generates an error: "System.NullReferenceException: Object reference not set to an instance of an object"
Agent has been paused in replication link and not removed.
-
Cause
Multiple replications to one target with the same Agent ID are not allowed. -
Resolution
To resolve the issue please remove the agent from all replication links first, wait for the agent to move under the "Recovery points only" section on the target Core. Then, add the agent back to the replication link from the source Core.