"The tag is active but we couldn't find any custom parameters."
I am trying to get this resolved using Google Tag Manager which I have set up and I know my feed which I created in Adwords works OK and is valid. How do I create dynx_itemid and give it a value within GTM? I thought that was in the CustomParams section where you set "key" and "value" and this should match my adwords feed? Is this correct? My domain is pembrokeinstruments.com and I am checking the tags with the chrome extension.
We haven't detected custom parameters for custom business types (Google Analytics)
View tag implementation instructions
The tag is active but we couldn't find any custom parameters.
Check that the remarketing tag is implemented correctly. Custom parameters are necessary to enable dynamic remarketing. Learn about the dynamic remarketing tag.
Re: "The tag is active but we couldn't find any custom parameters."
dynx_itemid should have the same value as the item id in your feed. You can define the id on your site as a data layer variable and pull it from there into your dynamic remarketing tag in GTM. What ecommerce platform are you using?
Arnold Majlath, Google Analytics Top Contributor
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