Combining multiple changes in one request is actually part of the oData standard (which is REST): http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/comple

Combining multiple changes in one request is actually part of the oData standard (which is REST): http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part1-protocol/odata-v4.0-errata02-os-part1-protocol-complete.html#_Toc406398359 http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/comp... You can send multiple retrieves and changes in one multipart request.