I assume these were just typos, because 203 isn't an error response,
and for these APIs about the only error response you can get, besides
401 I guess, is a 403 for policy forbidding the user from making that
request. So this changes the various 203 to 403 error codes in the
API reference.
Change-Id: I377b4c11d04c84b00165aae00990c93c5d52e668