F1040-421-03
IRS Explanation
If ‘OtherTaxLitCd’ in [OtherTaxStatement] has the value “1291INT” and the corresponding
‘OtherTaxAmt’ has a value greater than zero, then Form 8621, ‘InterestOnEachNetIncrInTaxAmt’ must have a value greater than zero.
Issue
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Solution
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