Hi Madhav,
This error is coming because the interface is already locked in some other request/task. When you try to regenerate the BOP, it changes the Interface 'ZIF_Z_360_PA........' . Since this interface is locked in another request/task, it is unable to change it in your task. You can go to that specific task/TR and unlock your object from that task/TR. Then try to regenerate the artifacts, it should work.
Regards,
Ekansh