Travelfusion’s Prepay scheme bypasses the traditional credit card payment process. Using the Prepay scheme requires signing a special agreement with Travelfusion, as well as some account configurations. 

When a booking is processed as Prepay, Travelfusion handles the payment directly with the supplier. The card details that were submitted are not sent to the supplier. Instead, the booking amount is deducted from the customer's Prepay account. 

If a certain booking is enabled for Prepay, a required parameter will be returned - UseTFPrepay.

If you would like to process that booking as Prepay - you’ll need to submit UseTFPrepay as a custom supplier parameter. 

The values can be one of the following, per the business logic you chose to implement:

1. “Always”. This booking will always be processed as prepay.

2. "WhenApplicable". Travelfusion will decide whether or not to process the booking as Prepay. This means that your card details may be submitted to the supplier. 

The UseTFPrepay parameter gives you flexibility on a per booking basis. Furthermore, it allows you to support a quick switch back to a non-Prepay configuration. It’s also useful to cater for cases in which the prepay method cannot be supported (i.e. if for example you run out of credit). We will have alerts in place to inform you of such cases and we ask that you respond as quickly as possible to those alerts.