After you file

@fanfare  Thanks again. Yes you are right.  But see I had filed the 2021 Amendment in January 2023 which is still not processed !    I later filed the 2022 return just before due date in April 2023.

 

Thanks for your suggestion that I could pay for 2021 1040-X online.   I will wait and watch for 2021 Amendment to be processed and any notice.