'gtag Purchase Event ignored on Google Analytics

I'm succesfully tracking some events with gtag.js on Google Analytics, with the exception of "purchase" event. Using GTM/GA chrome plugin I've checked that all events are tracked correctly, "purchase" included. The problem is that "purchase" is not tracked on Google Analytics: all the others are tracked ("begin_checkout", "add_to_cart" ...).

gtag("event", "purchase", {
  affiliation: "Google online store",
  coupon: "SUMMER_DISCOUNT",
  currency: "USD",
  shipping: 5.55,
  tax: 3.33,
  transaction_id: "T_1",
  value: 28.86,
  items: [
    {
      id: "P12345",
      name: "Android Warhol T-Shirt",
      coupon: "P12345_coupon",
      list_name: "Search Results",
      brand: "Google",
      category: "Apparel/T-Shirts",
      variant: "Black",
      list_position: 3,
      quantity: 1,
      price: 9.99
    },
    {
      id: "P12346",
      name: "Flame challenge TShirt",
      coupon: "P12346_coupon",
      list_name: "Search Results",
      brand: "MyBrand",
      category: "Apparel/T-Shirts",
      variant: "Red",
      list_position: 5,
      quantity: 1,
      price: 9.99
    }
  ]
});

The conversion/e-commerce graph is flat as you can see. What am I missing? enter image description here

Update I've created a GAnalytics test account and the purchase event is tracked. On the screenshot's account, maybe, some configuration is missing: could be?

eventsgoogle-analyticsevent-trackinggtag.js


Solution 1:[1]

I had the exact same problem. Some things I noticed that could explain ut.

  1. Date Range: Maybe you missed the fact that the date range in your Analytics report is set for 26 Oct - 1 Nov, while your events were triggered on 2 Nov?

  2. Wrong Value Field: If the calculation of the value field is wrong (does not equal total of all items plus shipping field plus tax field) Google might ignore the event.

  3. Processing Time: Even when the "Real-Time" view shows the events, they are not always included in other reports until some time later.

Solution 2:[2]

Interestingly I'm seeing something similar on my tests and I'm using some sample code off google:

<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-XXXXXX-Y"></script>
<script nonce="djRFUUKP+SLF1k4qkKFqiLTO4Qo=">
    window.dataLayer = window.dataLayer || [];
    function gtag(){dataLayer.push(arguments); }
    gtag('js', new Date());
    gtag('config', 'UA-XXXXXX-Y');
    </script>

    <script nonce="djRFUUKP+SLF1k4qkKFqiLTO4Qo=">
    gtag('event', 'purchase', {
    "transaction_id": "24.031608523954162_C",
    "affiliation": "Google online store_C",
    "value": 0.01,
    "currency": "GBP",
    "tax": 1.24,
    "shipping": 0,
    "items": [
    {
      "id": "P12345C",
      "name": "Android Warhol T-Shirt",
      "list_name": "Search Results",
      "brand": "Google",
      "category": "Apparel/T-Shirts",
      "variant": "Black",
      "list_position": 1,
      "quantity": 2,
      "price": '0.01'
    },
    {
      "id": "P67890C",
      "name": "Flame challenge TShirt",
      "list_name": "Search Results",
      "brand": "MyBrand",
      "category": "Apparel/T-Shirts",
      "variant": "Red",
      "list_position": 2,
      "quantity": 1,
      "price": '3.0'
    }
    ]
    });
    </script>

We use nonce because we are using CSP and believe all CSP urls are set correctly in the CSP.

Any insight would be a great help as to why this would not be logging this transaction data.

Solution 3:[3]

For Item Data:, id should be the transaction ID. See here:

https://developers.google.com/analytics/devguides/collection/analyticsjs/ecommerce#item

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 ipodppod
Solution 2 Stuart Palmer
Solution 3 ouflak

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