Unapplied Credits
The Unapplied Credits field (in the Current Vendor Balances section of the Vendor Payment Summary area) is calculated as:
When adding a new Vendor Payment, the value in this field will be displayed after selecting a value in the Vendor field. As new entries are added to the Vendor Payment Paid Documents and Detail grids, this value will only be updated upon clicking Save.
This value takes into account payment applications on other documents, not just the current Vendor Payment.