@mlincoln Following up in case this occurs again. 

This happens when there is an entry in both the current year installment sale and the prior year installment sale sections. For example, if you enter in both places with code 4, it adds them up to be code 8. Or, if one was code 4 and the other was code 3, it would report as code 7.

To resolve this, either enter the prior year section or the current section.