Pay using eWallets, bank transfers, direct debits, local card schemes, Postpay and eInvoice/ Buy Now Pay Later Authentication Set your headers Authorization: {your_credentials}
Content-Type: application/json
WP-Api-Version: 2024-07-01 Replace {your_credentials} with your base64-encoded Basic Auth username and password given to you by your Implementation Manager. <br><br> You must use the Authorization header for any request you send to our Account APIs, unless you are using client certificate authenticating with SSL/TLS . <br /><br /> DNS Whitelisting Whitelist the following URLs: * https://try.access.worldpay.com/ * https://access.worldpay.com/ Please ensure you use DNS whitelisting, not explicit IP whitelisting. When you make a request within Access Worldpay, you should always cache the response returned.