Duplicate events in Google Tag Manager
Posted: Thu Jan 23, 2025 4:33 am
When using Google Tag Manager (GTM) to manage tags and events on your website, one of the most common issues you may encounter is duplicate events.
ITDO Blog - Digital agency for Web development, APPs, Transformation and Digital Marketing in Barcelona
ITDO Blog - Digital agency for Web development, APPs, Transformation and Digital Marketing in Barcelona
September 20, 2024 — 4 minutes reading time
Duplicate events in Google Tag Manager
Image by freepik
Duplicate events can distort your data, fast food email list generate incorrect reports, and impact traffic analysis, conversions, and other key metrics.
This article explains why this issue occurs, how to identify it, and how to resolve it to ensure that the data we collect is accurate.
What are duplicate events in Google Tag Manager?
Duplicate events occur when a single user action triggers multiple identical events instead of just one. This can inflate tracking data, causing errors in analytics reporting, especially in tools like Google Analytics 4 (GA4) .
For example, if you set up an event to track clicks on an "Add to Cart" button and it fires more than once per click, your user behavior data will be incorrectly inflated.
Why do duplicate events occur?
Misconfigured triggers : Overly broad settings can lead to duplicate events. For example, a trigger configured for all pages may fire multiple times if it is also associated with a specific click.
GTM Code Duplication – Inserting GTM code more than once on your website causes the tags to fire multiple times.
Multiple tags with the same trigger : If two tags are associated with the same trigger, they will both fire simultaneously, creating duplications.
Double Triggering in SPA Applications : In Single Page Applications (SPA) , events can fire multiple times if triggers based on history changes or custom events are not handled properly.
Tag sequencing errors : Tags that are not sequenced correctly can fire multiple times by a single user action.
GTM container added multiple times : Sometimes the GTM container may have been inserted more than once in the site code.
GA4 Integration Mistakes : Poorly managed configurations between GTM and GA4 can result in duplicate events if event and filter settings are not properly customized. For example, a common mistake is to configure GTM and the GA4 Global Tag at the same time, which results in a duplicate event. Another example would be creating events in GTM and GA4 at the same time. It is recommended to create the events in one place if both are linked.
ITDO Blog - Digital agency for Web development, APPs, Transformation and Digital Marketing in Barcelona
ITDO Blog - Digital agency for Web development, APPs, Transformation and Digital Marketing in Barcelona
September 20, 2024 — 4 minutes reading time
Duplicate events in Google Tag Manager
Image by freepik
Duplicate events can distort your data, fast food email list generate incorrect reports, and impact traffic analysis, conversions, and other key metrics.
This article explains why this issue occurs, how to identify it, and how to resolve it to ensure that the data we collect is accurate.
What are duplicate events in Google Tag Manager?
Duplicate events occur when a single user action triggers multiple identical events instead of just one. This can inflate tracking data, causing errors in analytics reporting, especially in tools like Google Analytics 4 (GA4) .
For example, if you set up an event to track clicks on an "Add to Cart" button and it fires more than once per click, your user behavior data will be incorrectly inflated.
Why do duplicate events occur?
Misconfigured triggers : Overly broad settings can lead to duplicate events. For example, a trigger configured for all pages may fire multiple times if it is also associated with a specific click.
GTM Code Duplication – Inserting GTM code more than once on your website causes the tags to fire multiple times.
Multiple tags with the same trigger : If two tags are associated with the same trigger, they will both fire simultaneously, creating duplications.
Double Triggering in SPA Applications : In Single Page Applications (SPA) , events can fire multiple times if triggers based on history changes or custom events are not handled properly.
Tag sequencing errors : Tags that are not sequenced correctly can fire multiple times by a single user action.
GTM container added multiple times : Sometimes the GTM container may have been inserted more than once in the site code.
GA4 Integration Mistakes : Poorly managed configurations between GTM and GA4 can result in duplicate events if event and filter settings are not properly customized. For example, a common mistake is to configure GTM and the GA4 Global Tag at the same time, which results in a duplicate event. Another example would be creating events in GTM and GA4 at the same time. It is recommended to create the events in one place if both are linked.