Unable to delete original data on Mac after export
Data removal from the Mac for export and unable to delete the original data to clear error errors
Mac mini, macOS 26.4
What happens when you try?
What are you trying to accomplish by deleting data?
If you wish to erase this Mac and prepare it for a new owner, then this:
What to do before you sell your Mac - Apple Support
Are you trying to reset it to factory settings?
If so, then this: Erase your Mac and reset it to factory settings - Apple Support
If something else, please let us know in more detail.