SAP BO - Compare values between rows and conditionally display

I have a request where I need to create an integrity report where I am looking at sales data and verifying that the payment terms are consistent on all items (rows).

Sample data:

Sales # | Line # | Terms Code 
100 | 1.0 | N90 
100 | 2.0 | N90 
101 | 1.0 | N60 
101 | 2.0 | P45 
101 | 3.0 | N60 

Notice that on SO 101, line 2.0 has a different terms code. I need to detect that and only display order 101 on the report.

I was looking at using the PREVIOUS operator in a variable like this:

=If(Previous([Payment Terms Code])=[Payment Terms Code]) Then 0 Else 1 

but that looks at the Order 100 line 2.0 and would flag it incorrectly.

I am not sure how I can do this, but maybe using the IN operator some how. Suggestions?