[Lukas]

Hi,
I keep having the very same issues – trying to connect FB with server side GTM container using the walkthrough step by step line up in FB Events Manager – Integrate with partners (GTM). Now this is what I have found out:

a) when you get to the step “Publish GTM containers”, you get new entries published only into client side GTM container (some variables, one trigger, four tags)

b) server container that points to GCP cloud someting.xxxx.app does not get a thing and IS NOT PUBLISHED

c) if you want to repeat step A, you have to delete all new FB variables, trigger and FB tags.

d) now the issue could rest with FB requesting that it passed sensitive personal data ONLY TO THE 1st PARTY tagging server – and that is not GCP server. There are two available GTM templates in library and NONE of them supports google server platform / google addresses. (you can notice that symbol of crossed circle). things that are supported are marked with that check sign.

so my guess is that you need to have tagging server on your own domain e.g. measure.domain.com and then the FB walktrough should populate and publish settings into your server side container.. because really. this is just about missing stuff in server container.. the client container gets published.