One of the most common reasons is an explanation on how a foreign tax credit was calculated. Any expat who wants to claim this tax credit must submit a statement that shows how the amount was calculated. Turbo Tax calculates this in Form 1116 worksheet so this is already attached if you are filing as a US resident. I think your explanation, you wrote in the explanation statement, should cover this very well.
Keep your supplemental disclosure form handy if this is questioned further by the IRS. At this point, I think the form may have been generated at random but save the information anyway in case if further information is requested from you by the IRS.
@LA2025
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
