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Possible Cause 1: The taxpayer has an IP PIN and it is not included on the return.
Resolution: Enter the taxpayer's IP PIN on the tax return.
If the taxpayer can not cannot obtain their IP Pin then their return must be paper filed.
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Resolution: Correct the taxpayer's information, resign, and resubmit.
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 | Taxpayers can obtain their IP Pin by locating their CP01A Notice issued for the calendar year they are filing or obtain their IP in their online IRS account. For more information regarding the IP Pin reference Identity Protection Pin (IP Pin). |
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