If your Fannie Mae DO/DU findings indicate that the borrowers are not married, but they are actually married, this is often a sign that the VA marital status was not selected correctly in ARIVE. 

For VA loans, the borrower's marital status must be selected separately by navigating to the VA Loan tab within the loan file.

Fannie Mae DO/DU Findings Message:

The case is ineligible because the co-borrowers are not married. There may be circumstances in the VA Handbook under which this loan may be approved.

1. Navigate to the loan and click VA Loan.

2. In the dropdown menu for Borrowers married each other, select Yes.

3. Click Save Changes.

After changes have been saved, you can try to rerun AUS.