Sounds like they misunderstood. If they filed a joint return for 2022 --- it was ON a Form 1040. Form 1040 is their tax return. They need to enter the AGI that is on line 11 of that form. The amount is the same for each of them. If the amount from their line 11 does not work and let them e-file, they can try to use "zero" instead. If neither of those work, they can file by mail.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
