Mailbox is stuck in deleting status, and subscription is disabled. An attempt to destroy subscription gives error in BA:
Destroying service of Subscription #1234567 failed: Parallels Operations Automation error #extype_id #233, module_id #GlobalRelay, There is no subscription with id 1234567 and enabled archiving.. Error Code: 0x49f35451. Click here to find a solution Report ID: 327418
Canceled or failed tasks
Check if there are any failed or canceled tasks related to this subscription, process them and repeat the removal attempt. If they have already been rotated, contact your Technical Account Manager or PTA team (firstname.lastname@example.org) to discuss possible workaround.