When you generate a checkout for a product or service with OpenNode, your customer may accidentally not enter enough Bitcoin to complete the checkout, resulting in an underpayment. This often occurs because the payer forgets to include a few extra sats to cover the network fees for an on-chain Bitcoin transaction.
In the case of an underpaid payment, the buyer will be shown another checkout for the remaining balance. They will have the option to make an additional payment to complete the transaction or request a refund for the impartial amount already paid.
OpenNode offers an underpaid threshold feature that allows you to set a limit on what you are willing or not willing to accept for an underpaid checkout. Learn more about our underpaid threshold feature here.