- This return could not be processed for electronic filing by Illinois because of an issue with one or more of the pieces of information used to validate the signature: IL PIN, Prior Year AGI, Driver's License or State ID Number
- Please review and correct the Primary taxpayer's signature requirements. At least one of the following signature fields must be present and valid on the Dept. Of Revenue's file: IL PIN, Prior Year AGI, Driver's License or State ID Number.
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