Changes to Create a document

the request property notification became not nullable

api tag Documents added

api tag Document removed

added the media type application/xml for the response with the status 400

added the media type application/xml for the response with the status 401

added the media type application/xml for the response with the status 403

added the media type application/xml for the response with the status 422

added the media type application/xml for the response with the status 429

added the media type application/xml for the response with the status 503

endpoint added