So I have stuck with the old method of google tags as I could not get the dynamic remarkting attributes to work with Tag Manager.
Looking into this again, all the tutorials / products only submit the product id as the shopify parent ID, not taking into account the variable?
Shopify submits the ID to Google Merchant center in the format "shopify_US_“ID”_“VariantID” - so surely that should be the id you send to GA4 / Tag Manager?
Not sure if this helps? Adding Dynamic Marketing tags
thanks, thats the way I have done it but I would like to move onto tag manager and GA4
It’s interesting to see you use the words dynamic remarketing and then GTM / GA4.
Dynamic remarketing is only used in Google Ads, with using a Dynamic Display campaign. The code should be sent to Google Ads, which can be done in GTM, yes.
However an easier setup would be: https://feedarmy.com/kb/adding-google-adwords-remarketing-tag-to-shopify/