Exchange task is failing with following output:
Task name Provide Exchange hosting for organization (ds_id=314095) Last execution output Provisioning request failed. Error in 'SW Managed Exchange.CreateAddressList'. Exception calling "Execute" with "3" argument(s): "Active Directory operation failed on DC01.domain.tld. The object 'CN=S001059875 AL,CN=All Address Lists,CN=Address Lists Container,CN=chost,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=domain,DC=tld' already exists."
This may be related to previously unavailable domain controller or due to tasks being run manually in incorrect order. Or, possibly, the object was created on the backend without POA interference.
Remove conflicting object using Exchange Management Shell, e.g. for address list:
PS> remove-addresslist "S001059875 AL"
That can also be a Global Address List. In that case:
PS> remove-globaladdresslist "S001059875 GAL"
- Restart failed task. Exchange hosting will be recreated from scratch. GAL and AL will be recreated during the task execution.