We're currently using 1 marketo thank you page, 1 marketo form, and unique landing pages (that the form sits on) for almost all of our content download LPs. We've added tokens to that single TY page that directs users to url of the content based on the landing page that sent them to that TY page.
The problem I'm facing is that we aren't able to track conversions in GA, Optimizely and other analytics tools in such a way where we could easily see which downloadable content drove the conversion unless we implement unique click/event tracking on the submit button of the form for each landing page.
Has anyone found a way to append some kind of unique string to the thank you page URL that is dynamic and changes based on the previous page? I considered adding token to the TY url but got the below message:
A URL path may contain only letters, numbers, period, dash or underscore ('.-_')