201 Created

9.2 2xx Successful
      ...
      create the resource before using this Status-Code. If the action cannot
      be carried out immediately, the server MUST include in the response body
      a description of when the resource will be available; otherwise, the
      server SHOULD respond with 202 (accepted).

I believe the last sentence is wrong and should read:
      If the action cannot be carried out immediately, the server MUST
      include in the response body a description of when the resource
      will be available, and the server SHOULD respond with 202
                       ======
      (accepted).

Dave Kristol