It sounds like your JSON data doesn’t match your Import Mapping.
Are you able to share both the Import Mapping and the data that is failing so we can confirm this?
Hi Robert,
Below is the JSON structure for import mapping I use, and the input JSON is,
For people in the future who have this problem. I had the same error.
My json string and import mapping both were correct, but the access rules of one of my entities was incorrect!