purchase

dataLayer.push({ ecommerce: null }); // Clear the previous ecommerce object.
dataLayer.push({
  event: "purchase", // name of the event. In this case, it always must be purchase
  ecommerce: {
    currency: 'USD', // required
    value: 3597.00, // required - order total (price of all products + shipping)
    tax: 3.00, // optional - tax
    transaction_id: 'abc123', // required - transaction id
    coupon: 'ENDOFSUMMER', // optional - if coupon was applied to the order, include it here 
    items: [ // an array with a product
    {
      item_id: "SKU_12345", // insert an actual product ID - One of item_id or item_name is required.
      item_name: "3.9GHz 6-Core 5600G AMD Ryzen", // insert an actual product name - One of item_id or item_name is required.
      item_brand: "Intel", // optional - insert an actual product brand
      item_category: "Dedicated", // optional - insert an actual product category - The category of the item. If used as part of a category hierarchy or taxonomy then this will be the first category.
      item_category2: "Instant Dedicated Servers", // optional - insert an actual additional product category
      item_category3: "cat3", // optional - if it is possible to drill down the categories
      item_category4: "cat4", // optional - if it is possible to drill down the categories
      item_category5: "cat5", // optional - if it is possible to drill down the categories
      item_variant: "variant", // optional insert an actual product variant
      price: 9.99, // optional - insert an actual product price. Number or a string. Don't include currency code
      quantity: 1 // optional - insert an actual product quantity
    },{
      item_id: "SKU_12345",
      item_name: "3.9GHz 6-Core 5600G AMD Ryzen",
      item_brand: "Intel",
      item_category: "Dedicated",
      item_category2: "Instant Dedicated Servers",
      item_category3: "cat3",
      item_category4: "cat4",
      item_category5: "cat5",
      item_variant: "variant",
      price: 9.99,
      quantity: 1
    }
    ]
  }
});