A part payment
Record the amount that reached your account. The invoice keeps the rest open and shows it under Payments & credits. Use remaining balance fills in exactly what is still owed when the customer pays the rest. See Record a payment on an invoice.
More than the invoice
Deline shows … more than owed: "This payment is … more than the … still owed on this invoice." You can then press Record …, keep … as credit:
- The invoice is paid in full.
- The extra is held for the customer in your books as customer credit (Customer deposits). Apply it to their next invoice, or pay it back, in Receipts & payments.
When can't the extra be kept as credit?
- "Keeping the extra as customer credit works in books kept in USD for now. Record the remaining balance, then pay back or invoice the difference."
- "This customer is not in your books yet, so the extra can't be kept as credit here. …": record the remaining balance; the customer is added when their invoice is posted.
If something goes wrong
- "This amount is higher than the remaining balance. Check the amount or refresh for recent payments.": someone may have recorded a payment meanwhile. Press Refresh balance.
- "We could not confirm the result. …": check the invoice or retry the same request; do not record a second payment.
Explanation written from the Deline app's own screens and texts (build eba146497 (Deline cf723fe1f)); it has no steps to check.