About built-in variables | Piwik PRO help center lists the built-in variables. But where is the documentation of their corresponding data layer keys? I know I can see them in the Data Layer payloads of Piwik’s automatic data layer events (eg stg.scroll), but I don’t want to go through all these events manually to find all the keys. This is important, as it means I cannot use the same keys in my own data layer events. Absolutely should be part of the documentation on that page…
Of course, I created some DL variables that use the same keys as Piwik’s events, and then found out that PP TM of course overwrites them again. Now I have to re-do several variables…