Get Checkout Template

curl -X GET \
  'https://www.wixapis.com/ecom/v1/checkout-templates/d447475f-34ed-4be5-b199-b120c6938c39' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: <AUTH>' \

{
  "checkoutTemplate": {
    "id": "d447475f-34ed-4be5-b199-b120c6938c39",
    "status": "ACTIVE",
    "customization": {
      "webClient": {
        "disabledContinueShoppingButton": true,
        "disabledPolicyAgreementCheckbox": false
      },
      "lockedGiftCard": false,
      "lockedCoupon": true,
      "disabledManualPayment": true
    },
    "lineItems": [
      {
        "quantity": 2,
        "catalogReference": {
          "catalogItemId": "8df1afe4-90d1-162d-2d42-b8308125c193",
          "appId": "215238eb-22a5-4c36-9e7b-e7c08025e04e",
          "options": {
            "options": {
              "Size": "Medium"
            },
            "variantId": "00000000-0000-0000-0000-000000000000"
          }
        }
      }
    ],
    "customLineItems": [
      {
        "quantity": 1,
        "price": "5",
        "descriptionLines": [],
        "productName": {
          "original": "My Custom Item"
        },
        "itemType": {
          "preset": "PHYSICAL"
        },
        "couponScopes": [],
        "paymentOption": "FULL_PAYMENT_ONLINE"
      }
    ],
    "couponCode": "SUMMER_FLASH_SALE"
  }
}