A string value
that specifies the reason why a Rights Management license was revoked.
This value is used by the Revoke license operation operation in the Rights Management service.
These values are valid:
DOCUMENT_TERMINATED:
PDF document was revoked because it no longer exists. This
value is the default value.
DOCUMENT_REVISED:
PDF document was revoked because it was revised.
GENERAL_MESSAGE:
An error occurred while processing the PDF document.