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Notice code 480 (Default) — We changed the amount claimed as total itemized deductions on page 2 of your Form 1040NR because the…
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480
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What the IRS language says
We changed the amount claimed as total itemized deductions on page 2 of your Form 1040NR because there was an error on Schedule A, Itemized Deductions. The error was in the Computation of total itemized deductions on Schedule A and/or Transfer of that amount to page 2 of your Form 1040NR
What it usually means
480 is in our IR Manual catalog. Official wording is dense — we translate it for business owners and individuals and map realistic next steps.
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