• Data Source: Google Analytics 4 (GA4)
  • Type: Text
  • Definition: Transaction ID is a unique identifier assigned to each transaction within an eCommerce event, such as an order confirmation number. It is crucial for differentiating transactions, ensuring accurate tracking, and processing refunds.


The Transaction ID serves as a key metric in eCommerce analytics, providing a means to track individual sales, manage order processing, and reconcile revenue reporting. By assigning a unique ID to each transaction, businesses can avoid duplicate reporting of the same transaction and accurately attribute revenue to the correct purchase event.

Use Cases

  1. Sales Tracking and Reporting: Use Transaction IDs to track individual sales transactions over time, enabling detailed sales reporting and analysis at the transaction level.
  2. Order Management: Leverage Transaction IDs to manage and track the status of orders through fulfillment and delivery processes, facilitating efficient order management and customer service.
  3. Refund Processing: Utilize Transaction IDs to accurately process refunds, ensuring that returns are correctly matched to the original purchase transaction and reflected in revenue adjustments.
  4. Revenue Reconciliation: Employ Transaction IDs to reconcile reported sales revenue in Google Analytics with internal financial records, verifying the accuracy of sales data and analytics insights.
  5. Customer Purchase History: Analyze customer purchase behaviors over time by tracking Transaction IDs associated with each customer, informing customer relationship management and personalized marketing strategies.


  • Positive Indicator: Consistent and unique Transaction IDs for each transaction indicate a well-functioning eCommerce tracking setup, contributing to accurate sales data and analytics insights.
  • Negative Indicator: Duplicate Transaction IDs or missing IDs may signal issues in the transaction tracking setup, potentially leading to inaccuracies in sales reporting and difficulties in order management and refund processing.

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