This form will make a POST request to:
https://api.dawsonandrewstest.com/payment-service/api/v1/payments/checkout
{ "app_id": "", "business_unit": "GSMAi", "order_reference": "", "customer_id": "", "currency": "GBP", "payment_type": "PAYMENT", "customer_email": "robert.lyttle@dawsonandrews.com", "discount_code": null, "success_url": "https://dawsonandrewstest.com/success.html", "cancel_url": "https://dawsonandrewstest.com/cancel.html", "line_items": [ { "product_id": "", "product_name": "", "description": "", "image_url": "", "unit_price": null, "quantity": 1, "metadata": {} } ], "metadata": {} }