| description | string | conditional | Required if no items are provided |
| customer.email | string | true | |
| customer.billingCountry | string | true | |
| customer.billingAddress1 | string | true | |
| customer.billingCity | string | true | |
| customer.billingPostcode | string | conditional | Required if the customer.billingCountry is any of SE, NO, FI, DK, GB, US, DE, AT, CH, NL, BE, AU, FR, PT, PL, GR, CZ, HU, RO, SK, IT, ES |
| customer.billingPhone | string | conditional | Required if the customer.billingCountry is any of SE, NO, FI, DK, GB, US, DE, AT, CH, NL, BE, AU |
| customer.firstName | string | true | |
| customer.lastName | string | true | |
| customer.billingState | string | conditional | Required if the customer.billingCountry is any of US, AU, IE, RO, IT |
| extraData.termsUrl | string | false | |
| items.name | string | false | |
| items.quantity | string | false | |
| items.price | string | false | |
| items.currency | string | false | |
| items.identification | string | false | |
| items.extraData.type | string | false | any of physical, sales_tax, discount, store_credit, shippingFee, giftCard, digital, surcharge. If not provided shippingFee will be used |
| items.extraData.totalAmount | string | false | |
| items.extraData.taxRate | string | false | |
| items.extraData.totalTaxAmount | string | false | |
| items.extraData.totalDiscountAmount | string | false | |
| items.extraData.productUrl | string | false | |
| items.extraData.imageUrl | string | false | |