On the customer card in the Payments tab you can set application method. If you select "Apply to oldest" here then then payments from the customer will automatically be applied to the oldest open customer ledger entries. The application will post without a preview and there is currently no way to review the posting applications prior to them posting.

For Context, our customer checks can have over 100 invoices listed in the remittance. I have changed the application method on the customer card from "manual" to "apply to oldest" but was would like a suggest application to oldest open invoices. My concern is the payments post without the ability to review the application first and many times a few invoices are missed by a customer.

Having a function of "suggest application" in customer payment application would be an efficient tool and would promote accuracy.