A system includes identification of editing of an active document by a user, and, in response to the identified editing, setting of enqueue locks on the active document, creating a draft document corresponding to the active document and an enqueue context associated with the draft document, storing the enqueue context with the draft document and attaching the enqueue context to a request session, determining an eTag of the active document and storing the eTag with the draft document, and associating the user with the draft document as its exclusive user.