> This article is missing one detail: what if resource creation fails? I didn't get your point. If the resource creation fails during the request then either

> This article is missing one detail: what if resource creation fails? I didn't get your point. If the resource creation fails during the request then either a 4 or 5 status is returned. If the resource creation succeeds but the long-running process fails in some way, either during processing or at creation time, then the resource representing the long-running process will be updated by the server to inform the client of the process' current status.