post
https://pos.uk.eagleeye.com/2.0/connect/wallet/productExchange
This API endpoint allows the exchange of one or more products for another set of products. The basket request attribute includes both the product(s) being returned salesKey=REFUND and the new product(s) being purchased salesKey=SALE. The basket will then be readjudicated based on the offers that were available in the original transaction, against the new items in the basket, and any points rewards will be adjusted accordingly.