Partially refund a balance

Object

Name	Description
`MerchantPos`	POS object representing the cash register application.

Method

Name

Description

RefundAtPspRequest

Call used to initiate a par tial refund where the PSP reference is unknown.

This can happen when the original sale transaction was performed offline, in which case there will be no PSPReference, since this is generated only in an online situation.

Parameters

There are two ways to perform a partial refund:

1. the pspReference is known: In this case, only the pspReference needs to be provided, the properties TerminalId and TenderReference are not required.

2. the pspReference is NOT known: This can happen when the original Sale transaction was performed offline, in which case there will be no pspReference, since this is generated only in an online situation.

In this case, the properties TerminalId and TenderReference need to be provided, the property PspReference is not required.

Name	Type	Description
`merchantAccount`	String	The `merchantAccount` account to receive the money
`modificationCurrency`	String	The currency of the refunded amount
`modificationAmount`	long	The refunded amount. Can be smaller than the initial amount, or in the limit defined per merchant
`merchantReference`	String	The unique merchant reference
`pspReference`	String	The unique PSP reference.
`tenderReference`	String	The unique tender reference. In offline situation, the cash register may not have the PSP reference. The `tenderReference` in combination with `terminalId` need to be send in the request.
`terminalId`	String	The unique ID of the terminal on which the original transaction is performed.

Callback

Name	Description
`refundAtPspCallback`	Refund Callback returns the result of a partial refund, as well as any errors. Returns an adyenResult `RefundAtPspResult` with the transaction result details