Destination

The Destination request header specifies the URI that identifies a destination resource for methods such as COPY and MOVE, which take two URIs as parameters.

   Destination = "Destination" ":" Simple-ref

If the Destination value is an absolute-URI (Section 4.3 of [RFC3986]), it may name a different server (or different port or scheme). If the source server cannot attempt a copy to the remote server, it MUST fail the request. Note that copying and moving resources to remote servers is not fully defined in this specification (e.g., specific error conditions).

If the Destination value is too long or otherwise unacceptable, the server SHOULD return 400 (Bad Request), ideally with helpful information in an error body.