When processing the ‘incoming payment’ to apply to one or more of the ‘open ITEMS’ of a CUSTOMER, there may be a situation where the incoming payment is more than the ‘tolerances’ allowed. In this case, you can still go ahead and process the payment by resorting either to a Partial Payment or a Residual payment.
A Partial payment results in posting a credit to the customer’s ‘open item,’ but leaves the original item intact. As a result, no open item is cleared. During partial payment, the system UPDATES the ‘invoice reference’ and ‘allocation’ FIELDS. In contrast to a partial payment, the Residual payment clears the particular ‘open item’ against which the payment is applied. However, since there are not enough amounts to clear the entire open item, the system creates a new open item, which is the DIFFERENCE between the original invoice item and the payment applied. Note that the new invoice/open item created by the system will have the new document date and new baseline date though you can change these dates.

When processing the ‘incoming payment’ to apply to one or more of the ‘open items’ of a customer, there may be a situation where the incoming payment is more than the ‘tolerances’ allowed. In this case, you can still go ahead and process the payment by resorting either to a Partial Payment or a Residual payment.
A Partial payment results in posting a credit to the customer’s ‘open item,’ but leaves the original item intact. As a result, no open item is cleared. During partial payment, the system updates the ‘invoice reference’ and ‘allocation’ fields. In contrast to a partial payment, the Residual payment clears the particular ‘open item’ against which the payment is applied. However, since there are not enough amounts to clear the entire open item, the system creates a new open item, which is the difference between the original invoice item and the payment applied. Note that the new invoice/open item created by the system will have the new document date and new baseline date though you can change these dates.