I wonder if you are thinking GTM when you say data layer.
In tealium there is a differnce.
What we think of in GTM as data layer is in fact teh data object or UDO in Tealium.
The data layer is then the resulting var set from any extentison run through utag.js and is where you then plug the vars into tags from.
02-06-2019 03:25 PM - edited 02-06-2019 04:02 PM
Tealium provides a browser extension called Tealium Tools
One of the tools available is called Utag Debugger
Install the extension and tool, then open it on any site running utag.
The tool opens in a new window which contains all the events that have been tracked and what the data layer looked like at the time the call was made