Google Analytics - Match UserID with my site's account ID

Question

Each of my registered clients have an unique account ID (eg: agent n°: 00173393).

I want to retrieve this information through google analyti

Answer 1

Why don't you use the account ID as User ID as well? That way you would have a 1-to-1 match:

ga('create', 'UA-XXXXX-Y', 'auto', {
  userId: accountId
});

Please note however that the User ID is not exposed back by Google Analytics. If you want to retrieve it, you need to save it inside a custom dimension:

• Admin -> Property -> Custom Dimensions -> Create one with User scope
• Add custom dimension tracking to your code

For instance:

ga('create', 'UA-XXXXX-Y', 'auto', {
  userId: accountId,
});
ga('set', 'cd1', accountId); // if it's custom dimension n1
ga('send', 'pageview');

Then you can retrieve the User ID via the UI:

or the API