Try this: Delete the substitute 1099-R and enter it as "Other Income." (Instructions are below.) The end tax result (in terms of United States tax rate and amount assessed) will be identical to the results achieved with the substitute 1099-R.
To enter your foreign pension on your return, follow the instructions below:
Terrible advice. It diminished my refund on both Fed and State. Owe state instead of getting refund!
OK, but where do I put the tax that was withheld by the foreign government on my pension?
@Filippo61 You can file Form 1116 to get a Tax Credit for Foreign Tax Paid.
Click this link for info on How to enter Form 1116.