I'm deploying a
destructiveChanges.xml file via Force.com Migration Tool to delete some listViews, Custom Fields, and Groups.
I determined we also can remove some record types from Cases. I received the error when I tried to deploy:
Error: Cannot delete record type through API
I'm not seeing that documented any where, and this is my first type attempting to use Force.com Migration Tool. Before adding record types to the
destructiveChanges.xml file I had successful deployments, so I'm fairly certain I'm using it properly.