We have a W-2 that has an amount in Box 18 but "NO OCCUP" in Box 20. I can't seem to reconcile the amount, but not sure what to put for "Associated State??"

The employer is in Alabama, we are in Florida and the job was in North Carolina.  State employer ID numbers for all 3 states are included on the W-2 (even though no income tax in FL).  Turbotax keeps kicking back this W-2 for review and the only thing I see that could be the issue is choosing the associated state for the local taxes.  Can you help??  Thanks 🙂