Some changes to attribute names need to be implemented for consistency. This was discussed here http://lists.koha-community.org/pipermail/koha-devel/2017-March/043576.html
I believe this is already done in the to_api_mapping method in Illrequest.pm in this patch: https://bugs.koha-community.org/bugzilla3/page.cgi?id=splinter.html&bug=22440&attachment=150718
All depending bugs have been resolved.