The returns the change number generated by the replication subsystem. The returns the change number generated by the Multi-Master Replication subsystem when : - the Multi-Master Replication is configured and enabled - the request is a write operation (add, delete, modify, moddn) - the control is part of a request. If all of the above are true, the response contains a control response with a string representing the change number. The implementation for the chnage number control plug-in is contained in the org.opends.server.plugins.ChangeNumberControlPlugin class. It must be configured with the postOperationAdd, postOperationDelete, postOperationModify and postOperationModifyDN plug-in types, but it does not have any other custom configuration. ds-cfg-change-number-control-plugin ds-cfg-plugin org.opends.server.plugins.ChangeNumberControlPlugin postOperationAdd postOperationDelete postOperationModify postOperationModifyDN