Hi, We use "aboutToModifyResource" in "TrisoftBatchOperationsListener" to check out a topic in a map before it is modified. But "aboutToModifyResource" is triggered on all topics in the map, not only topics that will be modified. That way all topics and the map are checked out, while only a few are changed. Expected is that only resources that will change are checked out. Is there a way to find out up front if a resource will be changed or not? Kind regards, Jeroen www.sdl.com SDL PLC confidential, all rights reserved. If you are not the intended recipient of this mail SDL requests and requires that you delete it without acting upon or copying any of its contents, and we further request that you advise us. SDL PLC is a public limited company registered in England and Wales. Registered number: 02675207. Registered address: SDL PLC, New Globe House, Vanwall Business Park, Vanwall Road, Maidenhead, SL6 4UB, U.K.