errorCode":8504. What is wrong with my CONFIG?

errorCode":8504. What is wrong with my CONFIG?

I can't determine what is wrong with my config. It worked properly until I added an additional field, but the additional field is just a number and shouldn't effect the config. I am attempting to do a bulk update add to an existing table based on this documentation.

https://www.zoho.com/analytics/api/v2/bulk-api/import-data/existing-table.html