If my swedish pension authority does not have a payer ID, what can I enter in that box? Turbotax doesn't let me finish without a number.

In the payer ID enter 99-9999999 (a series of nine 9s).  This should allow you to get past this screen.  Please let us know if this does not resolve the issue for you.

Thanks for the suggestion! It did not work, so I entered the pension as foreign earned income instead.

The new Payer ID number is 99-0999999 as a substitute Payer ID for foreign source pension. It works!! Finally.