Unique event ID variable

This variable for the Google Tag Manager web container generates a unique event ID. You can use this variable for setting up Facebook conversion API and event deduplication. This way, you will be able to share the same event IDs from the  web and server container.

Benefits of Unique event ID variable:

1. Ability to create a variable that generates a unique event ID
2. Reducing any risk of duplicating Facebook events
3. Sending the same events IDs from the web and server container

Useful links:

     1. How to easily maintain Facebook Test ID in your Google Tag Manager Server container

     2. How to set up Facebook Conversion API.