Check that xproc-http properties become headers in multipart documents.
If the documents in a mulitpart request have document properties in the
http://www.w3.org/ns/xproc-http namespace, those properties
become headers.
The root is not check-multipart.The content-description of the first part is incorrect.The content-id of the first part is incorrect.The content-description of the second part is incorrect.The content-disposition of the second part is incorrect.The random-header of the second part is incorrect.