GA4 - purchase - next

window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  event: 'ga4_purchase',
  reorder: 'true',  // Varaible value. 'true' - if the order is a reorder, 'false' - if the order is not a reorder.
  ecommerce: {
    currency: 'USD',                           //Required. Transaction Currency - Type: string
    value: 8400.90,                           //Transaction Revenue  - Type: number
    tax: 525.06,                               //Transaction Tax - Type: number
    shipping: 0.00,                            //Transaction Shipping - Type: number
    transaction_id: 'abc123',                  //Required. Transaction ID - Type: string
    coupon: 'coupon',                          //The coupon name/code associated with the event - Type: string
    items: [{
      item_name: 'ECLIPSE Blackoil Reservoir Simulation',        //Product Name - Type: string
      item_id: '71274',                                //Product ID/SKU - Type: string
      price: 4000.00,                                  //Product price - Type: number
      currency: 'USD',                                 //Currency of the price that is collected - Type: string
      discount: 0.00,                                  //Any discount associated with this product - Type: number
      item_brand: 'Oil and Gas Software',              //Product Brand - Type: string
      item_category: 'Schlumberger Software',          //Product Category - Type: string
      item_category2: 'Indonesia',                     //Product Sub-Category 1 - Type: string
      item_category3: 'Jakarta',                       //Product Sub-Category 2 - Type: string
      item_variant: 'Foundation',                      //Variant of the product - variant SKU/ID - Type: string
      quantity: 1                                      //Product quantity - Type: number
    },{
      // Another item.
    }]
  }
});