Minimize GA4 Ecommerce Tracking Errors with This Simple Tip!

⚠️ 💀 ☠ Here is how you can minimize GA4 Ecommerce Tracking Errors with This Simple Tip!

Suppose a customer adds a laptop-x1 and then later removes it, only to add a different model (laptop-y2) to their cart.

If the ecommerce data isn't cleared before the new transaction data is pushed, both laptops might incorrectly appear in the transaction details, leading to errors in sales tracking (check the screenshot below):

To avoid such issues from occurring in the first place, always clear the ecommerce data in the data layer before pushing a new transaction event in GA4.

// Step 1: Clear previous ecommerce data to avoid data contamination

dataLayer.push({

 'ecommerce': null

});

// Step 2: Push the updated ecommerce data after the new item is added

dataLayer.push({

 'event': 'add_to_cart',

 'ecommerce': {

 'items': [

 {

 'item_name': 'laptop-y2',   // Name of the newly added laptop

 'item_id': 'laptop-y2-id',  // Unique ID of the newly added laptop

 'price': 999.99,       // Price of the newly added laptop

 'quantity': 1        // Quantity of the newly added laptop

 }

 ]

 }

});

By clearing past data, you ensure the new transaction event reflects the current state, preventing contamination from previous actions like adding or removing items.

Mixed data points from different transactions can cause errors in tracking and reporting.