We have a feature that allows merchants to accept orders that are underpaid up to a 5% threshold. Underpayments are rare, but happen when customers pay from third-party services such as exchanges, which deduct a fee from the amount sent.
Here’s how it works: if the Underpaid deviation % is set to 2%, then if an order worth 100 EUR is underpaid by less than 2 EUR, its status becomes paid. The underpaid amount is covered by the merchant.
The underpaid deviation is set from Configuration and will influence payment received from any products.