@dmertz Thanks for clarifying. This information conflicts with the information provided by @AbrahamT , (included below).
"""""""If you know you’ll be receiving a Form 1099-R next year with a Code P and want to avoid the need to amend a return, include the data in the tax return in the current year with a Code 8. You can then ignore the Form 1099-R with the Code P when you receive it a year later. (Code 8 indicates that the amount is taxable in the tax return you are currently working on, and Code P indicates the amount is taxable in the prior tax year.) See here
pg. 15, 16 and 17 for a guide of the codes. particlarly pg. 15 and 17 for code 8 and P."""""
Am I missing something? You advice is to put codes J and P.
