Resource	Service (or Catalog)
Method	POST
Purpose	Create a new study
Client sends …		Request	POST service-URI (or catalog-URI)
		Header	Host: host
		Header	Date: date
		Header	Authorization: yosokumo user-identifier:request-digest
		Header	Content-Type: content-type
		Header (optional)	Content-Encoding: content-encoding
		Header (optional)	Content-Length: content-length
		Header (optional)	Content-MD5: content-digest
		Header (optional)	Accept: content-type(s)
		Header (optional)	Accept-Encoding: content-encoding(s)
		Entity	<study document (incomplete)>
Server returns …	Success	Code	201 Created
		Header	Date: date
		Header	Location: study-URI
		Header (conditional)	Content-Type: content-type
		Header (conditional)	Content-Encoding: content-encoding
		Header (conditional)	Content-Length: content-length
		Header (conditional)	Content-MD5: content-digest
		Entity (conditional)	<study document (complete)>
	• Authorization header malformed • Posted document not well-formed • Posted document length does not match Content-Length header value • Posted document digest does not match Content-MD5 header value • Posted document not a study	Code	400 Bad Request
	Authorization header missing	Code	401 Unauthorized
		Header	WWW-Authenticate: yosokumo user:digest
	• Requesting user not recognized • Request digest incorrect • Requesting user lacks POST service permission • Request references catalog not belonging to requesting user	Code	403 Forbidden
	Requested URI not recognized	Code	404 Not Found
	User referenced in study document conflicts with catalog URI	Code	409 Conflict
	• Data interchange format of posted document not recognized • Encoding of posted document not recognized	Code	415 Unsupported Format