May 27 2021
- If you need to update custom column values on the copied item then you need to make 2 requests and the copied item is in an invalid data state until the update request goes through - it might also fail
- It's currently impossible to copy a DriveItem (via GraphAPI) that have a unique custom column. Being able to alter the unique column during the copy would make unique custom column functional. Currently the unique constraint should be avoided, and that makes me sad.