11.7.3.2 Response Header Fields

11.7.3.2 Response Header Fields (Current)
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The origin server shall support Header Fields as required in Table 11.7.3-2.

Table 11.7.3-2. Response Header Fields

Name	Value	Origin Server Usage	Description
Content-Type	media-type	M	The media-type of the payload.
Content-Length	uint	C	Shall be present if no transfer encoding has been applied to the payload.
Transfer-Encoding	encoding	C	Shall be present if a transfer encoding has been applied to the payload.
Content-Location	url	O	Shall be present if the response has a payload containing a resource. See Section 8.4.3. May be present otherwise.
Warning	text	C	See below.

If the user agent specifies a Procedure Step State (0074,1000) Attribute with a value of "CANCELED" and the Workitem is already in that state, the response message shall include the following HTTP Warning Header Field:

Warning: 299 <service>: The UPS is already in the requested state of CANCELED.

If the user agent specifies a Procedure Step State (0074,1000) Attribute with a value of "COMPLETED" and the UPS Instance is already in that state, the response message shall include the following HTTP Warning Header Field:

Warning: 299 <service>: The UPS is already in the requested state of COMPLETED.

If the request was rejected with a failure status code, the response message shall include one of following messages in the HTTP Warning Header Field describing the nature of the conflict:

Warning: 299 <service>: The Transaction UID is missing.

Warning: 299 <service>: The Transaction UID is incorrect.

Warning: 299 <service>: The submitted request is inconsistent with the state of the UPS Instance.