How to delete all repeated object

Attached a file containing repeated member at 2 locations.
Seldup+delete can remove the duplicates, but cannot remove all members at the 2 locations.
Any possibilityRedundant.3dm (571.0 KB)

Kenneth, are you saying that you want to delete both the duplicate items AND the original ones? If so, I suppose this file is only a part of a much more complex file because in this case it would just be a matter of selecting them and deleting. Or?

I want to delete both of the duplicate items, that mean there should have an opening side after delete.
Any systematic command can be used?
Thanks

Does the command SelDupAll help here? --Mitch

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That seems to do the trick, yes. Learned something new today as well :smile: