If you sent the return with the ITIN application to the ITIN app mailing address then they would issue the ITINs and forward the return to the IRS for processing along with the correct numbers. If you completed the return as if the kids had ITINs and not SS#s then the return should have been processed successfully. So did the IRS deny the ability to claim the kids completely or did they deny the CTC you may have applied for incorrectly ?
FYI ... in the TT program ... if you used any ID number for the kids (to produce a return) that started with any # other than a 9 then the return was completed incorrectly. Open the return using the amendment program and enter the issued ITINs and see if that changes the return as the IRS changed it.
If not then you can always challenge the IRS's determination. Read the notice carefully for your options to respond.
