e-filed, it pops up "even though you e-filed, the government requires you to print and mail these forms to complete your return", hit print but "trouble printing return"

[twinbyz2001]

Doesn't say what forms needed and have never had to do this before. I moved states after returning from deployment if that matters

[JotikaT2]

I suggest printing a pdf copy of your government filing instructions to confirm what forms you need to mail in, if any.

Please see this FAQ for more details on when you would need to mail in additional support with Form 8453 after electronically filing your return.