Notice code 451Z (1040NR-EZ) — We allowed your personal exemption amount on line 13 of your Form 1040NR-EZ and changed your tax. Yo…

We allowed your personal exemption amount on line 13 of your Form 1040NR-EZ and changed your tax. You indicated that you were claimed on another person’s tax return or failed to claim your personal exemption. You can’t be claimed on another person’s tax return if you file Form 1040NR-EZ.

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What the IRS language says

We allowed your personal exemption amount on line 13 of your Form 1040NR-EZ and changed your tax. You indicated that you were claimed on another person’s tax return or failed to claim your personal exemption. You can’t be claimed on another person’s tax return if you file Form 1040NR-EZ.