Has anyone tried to submit a 1099-NEC test file to the state of WI? Last year we had issues getting the IRS system to generate the electronic file in the format WI wanted. We ended up mailing a bunch of them in. 

I just tried to upload a test file for 2021 and it's coming back with some of the same errors I got last year. Has anyone had similar issues or been able to submit 1099's to WI? Perhaps I'm doing something wrong. Any input is much appreciated!