Title: RE: [wsia] [wsrp] [wsrp-wsia joint interfaces] Merged interfaces document On your comment regarding faults - I second that. The document will be clearer (although we should remember that this document is very drafty). On your questions: 1. We can always throw a fault to indicate a failure of creation, instead of returning null. This will enable sending more information on the cause of the failure. 2. I second the confusion. I am not certain what the difference is now between a transient entity and a session. Actually, looking at the API, A Consumer/Producer could use either the transientEntity mechanism or the session mechanism to do the same thing - which is basically identify a conversation between the two. I am certain I am missing something. Per-my discussion with Mike, I believe what I understand is that the transientEntity spans users, and that the session doesn't, but this isn't explained in the document, and the line you pointed to definitely doesn't help explaning it. Maybe explaining in the common scenario why a Consumer would use a transientEntity would best explain intentions. Cheers, Gil P.S. I think question #2 is the biggest question, and if we finish with that, we have a workable interface which we can pick on the details of.