Why is my state refund rejecting when all information is correct?

[LeticiaF1]

Sometimes the Illinois return gets rejected when the primary taxpayer IL-PIN does not match the IL-PIN on the Illinois Department of Revenue production file. To fix this error, please follow these steps:

1. Make sure you have entered the previous year's IL AGI correctly.
2. Verify Your IL PIN 
3. Make sure to enter all 8 digits (This is not your 5-digit federal PIN).
4. Verify your IL drivers license or state ID number is entered correctly.
5. If it's your first year filing with IL, you will have to enter your IL Drivers License or state ID information. 
6. Enter each field exactly as it's on your IL Drivers License or state ID (First Name, Middle Name, Last Name, Suffix (leave blank if necessary), and weight.
7. You may not use an out-of-state or expired driver's license.
8. You may need to print and mail your return if the reject continues after re-transmitting.

What is Illinois e-file reject IL1040-8000-2 or IL1040-9900-2?