And the reason for the rejection says???????

Are you perhaps trying to file an extension for a return that was due 3/15?

That's never happened here before so that can't be 😉

Yes

Form 7004, the application for extension can only be filed after the Tax Period End Date ("TaxPeriodEndDt" specified in the "ReturnHeader") and on or before the due date of the return to which the extension applies as specifie

Yeah, that return was due 3/15. Can't be extended now.

"..... on or before the due date "   @taxestogo-hotmai

It's currently 3/28/23.   That return was due (or the extension filed) 3/15/23.   Cue up "It's too late" by Carole King.

"Cue up "It's too late" by Carole King."

Or fire up the Delorean 🏎