Thank you for this response, but I still don't know where to enter the taxable earnings in box 2a in the 2023 amended return. TurboTax doesn't seem to have a de...

Thank you for the reply. The 1099-R code in box 7 is "P", which is "P--Excess contributions plus earnings/excess deferrals(and/or earnings) taxable in 2023". Wh...