Symptoms
Destroying the subscription throws the following error.
Destroying service of Subscription #XXXXXXXX failed: Parallels Operations Automation error #extype_id #87, module_id #Exchange, Primary e-mail address is not defined for mail entity with id <MB_ID>..
Cause
The primary e-mail address for mailbox is not set.
Resolution
Add any primary e-mail address through CP, if subscription is accessible or contact Odin Technical Support(support@odin.com) to resolve the issue.