So, I have a Sales Order, that has a few Customer Deposits apply against it. I need to figure out what's

left over

. So, S)123 is for $500. I have 2 Customer Deposits ($150/$200). I need to determine that there is $150 left on SO123 (that is no covered by a Customer Deposit)

if you cant get to the deposits via related records, you could maybe do a search for non-applied deposits with that sales order reference, add the amounts up ad diff from the sales order total