I’ve updated the C# Koha API library that MarcEdit utilizes to include support for the item update when working with Koha version 3.8+. Additionally, I added to the git repository a reference application that demonstrates how to use the library. You’ll need to provide your own system and credentials to try it, but it should demonstrate how to make it all work together.
Git Hub Repository: https://github.com/reeset/koha_api
–tr