When filing 1099, can I leave blank if my bank doesnt have FEIN since it's a foreign bank?

Yes, the FEIN is not required to file for a Form 1099-INT.

If you are getting an error message. Don't upload your 1099-INT form. 

Select Enter a different way, and follow the instructions to enter your 1099-INT.

Where do I enter Form 1099-INT?