ERROR_IN_ARBITER_CWOBJ3187E=CWOBJ3187E: The collision arbiter implementation on {1} generate exception, {0}, which will result in a halt to replication.
Explanation
During replication, the same key collided with updates from another primary. The collision arbiter encountered an error resolving the collision.
User response
Review the provided error in the JVM logs and the FFDC logs. Review your custom collision arbiter code.