. IRS said "But we don't have all the information to process it. The following list explains what we need". They seem to have looked at it but stalled it. There are no specific 'list' specified in their letter. "Send any supporting forms or schedules to support the credits you are claiming in form 1040X" This is what they stated.
HINT ... the CTC is what they are asking about ... did you not send the form 8812 with the 1040X? That is what they need. The stimulus credit is something that they will calculate automatically however you could send the TT worksheet for that line 30 calcuation.
