Seems a lot of people struggling with this. I found also in Shopify store that when I place not only GTM snippet but something else to Additional Scripts section in Checkout settings , it goes to
..
if you inspect code of Order status page then.
That’s why we see this error in Tag Assistant.
So, I can not understand what the problem and why Shopify can noy help us to deal with it.
Tried to paste another tags to Order Status page and they also were placed inside this magic div. I also added Pinterest tag but I couldn’t see it anywhere in the source code.
23:24 Grayson (Support Advisor): Ah ok, I see. Taking a look, Google Tag Manager needs to go into the checkout files, which you don’t have access to for security reasons. It’s only available for our Plus subscription.
23:26 Dmitry Podoleev: Not always so, if you place it to Order status page also you can see how many page views you have. It doesn’t really need checkout files
23:28 Grayson (Support Advisor): In the case of GTM specifically, however, it does according to our Google Tag Manager help document. The Order Status page can have a lot of great tracking pixels added, but the GTM is saying it needs the checkout.liquid code to work.
23:31 Grayson (Support Advisor): OK, what specifically is the Snap pixel trying to do? Because it may be that it isn’t compatible. I’d love to take a look at this closer.
But it’s surprise to me for example if I don’t need this Checkout stage why am I not allowed to place my tags to Order status page.