window.dataLayer = window.dataLayer || []; window.dataLayer.push({ ecommerce: null }); window.dataLayer.push({ event: 'purchase', // name of the event. In this case, it always must be purchase ecommerce: { currency: 'EUR', value: 29.98, // order total (price of all products). If you want, it can be only price of all products tax: 3.00, // tax shipping: 5.00, // shipping costs affiliation: 'My online shop', // affiliation (e.g. affiliate id, name of the store, etc.) transaction_id: 'abc123', // transaction id coupon: 'ENDOFSUMMER', // if coupon was applied to the order, include it here items: [{ // an array with all products item_name: 'Product 1', // insert an actual product name item_id: 'product1', // insert an actual product ID price: 11.99, // insert an actual product price. Number or a string. Don't include currency code item_brand: 'brand A', // insert an actual product brand item_category: 'Apparel', // insert an actual product top-level category item_category2: 'T-shirt', // if it is possible to drill down the categories (e.g. Apparel, then T-shirt, then Men), use item_category2, item_category3, etc. Can use from item_category up to item_category5 item_variant: 'Blue', // insert an actual product variant quantity: '1', // product quantity item_coupon: 'SUMMER20' // if a coupon was applied not to the entire order but to one product, use item_coupon },{ item_name: 'Product 2', item_id: 'product2', price: 12.99, item_brand: 'Brand B', item_category: 'Category B', item_variant: 'Yellow', quantity: '1' }] } });