The full text of this error code reads - The Resident credit multiple does not equal Line 1 divided by Line 3 of the IT RC, or the calculation is invalid for your return due to Ohio adjusted gross income being equal to or less than zero. Please correct and retransmit.
You may have to mail your return in if you are sure that it is correct. If the overseas income has changed your return dramatically then Ohio's computers may be confused.
@leviathanlamont