This error occurred when attempt to associate an email message that has an attachement (document) to a workspace that already has a document with the same name.
The system has a great feature that automatically puts these attachments in the system as documents and links the email to the document - real nice. However in this situation, a previous version of the document already existed in Feng. Based on the error message wich stated that a 'Revision Comment is required', it looks like the system identifies that there is already a document with the same name, creates a new revision, but a 'comment required' check is not handled by the system.
The system did not prompt me to add a comment.
However, the document did get added to the document tab not as a revision of the origional document but as a new document instead.
