My federal return was accepted by my IL state return keeps getting rejected. I'm not sure why I keep getting "Reject Code IL1040-8100-1". I have my 2024 return transcript from MyTaxIllinois and I entered my 2024 AGI correctly, as well as my IP PIN, SSN, and State ID information. I've been rejected six times. Am I doing something wrong? Should I file by mail instead?
