As of API version 22, Zuora offers an improved, streamlined method of creating a payment and applying a payment to an invoice with a single API call.

If you are using an API version earlier than 22.0, or if you want to apply a single payment to multiple invoices, use the original method.

Note that the process described in this topic will create a payment, apply it to an invoice, and send it to the gateway. However, it does not validate the results from the gateway; the success result from the final query only signifies that the status of the payment was updated to "Processed." You must query against the GatewayResponseCode for that payment to determine whether the payment was approved or declined by the gateway.