Indiana reject code W2-028 occurs when a return has been electronically filed with two identical W-2s. Indiana will not accept a return with two identical W-2s electronically, even if one of the W-2s is for the taxpayer and one is for the spouse.
How to correct Reject Code W2-028
To correct Indiana reject code W2-28, either print and mail the Indiana state return, or change the amounts on one of the W-2s by $1 in each field containing an dollar amount.
Additional Information:
Indiana State Tax Information