Parent domain (example symantec.com) and child domain (example. abc.symantec.com) are registered to the service.
Add a DP policy to child domain and activate it. Any kind of dummy policy will work if you do not have a specific policy to process. For example, a policy with setting [Action: Log Only] does not harm email delivery.
Symantec is aware of this problem and will update this document once a solution is provided. You do not need to create a support case for this problem.
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