Our customer often work on shared document tray to which a many people have access to.
Unfortunately very common happened that the same document is opened in Document Tray by two or more persons and they try to store it in Docuware.
The one who is faster will store it and the other one will receive an error message that such document does not exist anymore.

So we ask to add functionality of locking an access to the document in Document Tray if someone opens such a document in Document Tray.