HTTP status code 204 means the server successfully processed the request, but is not returning any content. When wrapped responses (e.g. JSEND) are not used and nothing is in the body (e.g. DELETE).

The response MAY include new or updated metainformation in the form of entity-headers, which if present SHOULD be associated with the requested variant.

If the client is a user agent, it SHOULD NOT change its document view from that which caused the request to be sent.

This response is primarily intended to allow input for actions to take place without causing a change to the user agent’s active document view, although any new or updated metainformation SHOULD be applied to the document currently in the user agent’s active view.

The 204 response MUST NOT include a message-body, and thus is always terminated by the first empty line after the header fields.

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