This article cover the most frequent questions related to finalising the tracking installation.
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Question: The conversion tags are not triggered when I place an order?

The most common reason for this, is that the tracking script is not properly loaded after the conversion tags are fired. The script is triggered on all pages on the website, but must run after the conversion object on the check-out page:

Question: I get a 400 error when checkout script is fired?

This can be because the order_value is sent as an integer and not as a float.
This can also be because the click-id/cookie is a mock value instead of a real id from the database.