On my W2, box 16 is filled, but not 15 or 17. My state has no state income tax. I'm being asked for the number in box 15 since I filled in 16.

[ErinH · Accepted solution]

Some customers do not have an Employer State Identification Number listed in Box 15 on the W-2. This is causing an error when going through Federal Review. If employed and living in a state without income tax, remove the wages in Box 16. If your state does have income tax, contact your employer for a corrected W-2 with their ID number.