The interaction here is that we want the target system to create a document "now" unless they determine that a document they already have is sufficiently complete/up-to-date. Thus we can't use a "query" mechanism. As well, (for now at least), this isn't a document that can just be automatically assembled from existing data without human intervention. As such the document generation operation isn't appropriate. The CDex mechanism of soliciting the creation of a document seems to be the appropriate course.