Worldpay Merchant Id payment/googlepay_worldpay/gateway_merchant_id Worldpay's documentation for more information on how to generate a unique Merchant Id.]]> worldpay Username payment/googlepay_worldpay/username worldpay Password payment/googlepay_worldpay/password Magento\Config\Model\Config\Backend\Encrypted Worldpay's documentation for more information on how to get your Worldpay credentials.]]> worldpay