Symptoms
Different OA tasks can fail with the following error:
Subdomain service #xxxxxx does not exist
Examples of the tasks:
APS application 'Application name', id 123, instance 123456 : providing direct access to the site application contents
Create Offline Address Book for domain service
Register accepted domains (organization identifier: 7890)
There is a successfully processed task to remove the same organization.
5981305 Complete removal of organization (ds_id=yyyy) Nov-19-2013 11:12:53 Nov-19-2013 11:12:56 DomainService0000xxxx 1234567 Successful
The domain service mentioned in the output can be checked in OA database, it exists in l_domain_services, but does not exist in domain_services:
plesk=> select * from l_domain_services where ds_id=xxxx;
plesk=> select * from domain_services where ds_id=xxxx;
Cause
Domain service indeed does not exist as it has been already removed.
Resolution
The reported failed tasks from the queue 'DomainService0000xxxx' are no longer needed and can be canceled.