There is no "You say." The IRS has recognized that coding never happened for the tax filing year of 2021, to be filed in 2022. They expect to provide it for tax year 2022, filed in 2023. In the meantime, they give two alternative ways for software providers to include the info in the E-file data stream. It is either as Attachment (following the IRS naming protocol) or as the "raw data" as noted: Software developers who cannot attach a PDF binary attachment can use a 'GeneralDependencyMedium.'

I've been posting this all along. Yes, it is why providers such as Intuit have had this delay.

You can watch it for yourself. Just google:

IRS schema

And then open or download or otherwise access the files you see, naming will often include tax year and forms, so that you get the right file(s) and the Known Problems file is an Excel file, so unlock it to search for the forms or other info you are curious about. All of this is public info, and available from the IRS.

Your tax dollars at work.