Please explain why the documentation is not the same for every year, since this has been in place since 2014-7.
Because the tax forms have been changed almost every year since 2018 so you need to adjust for this ... since 2018 the income would be reported on line 8 of the Sch 1 however which line of that section has changed. Prior to 2018 it was on the form 1040 line 21.
