Community Tip - You can change your system assigned username to something more personal in your community settings. X
Can Document numbers be changed to Part Numbers and vise-versa by modifying attributes?
To change the system Number of either a WTPart or WTDocument use the Rename Action. This requires permissions to "modify identity" on the Object Type and State. If you're logged in with Administrator credentials you probably have these.
Richard,
Did Keir's suggestion help you?