Allow URL parameters 
By default, we collect all UTM parameters (with and without the utm_ prefix) and the ref (which is short for utm_source) parameter:
utm_source/source/refutm_medium/mediumutm_campaign/campaignutm_content/contentutm_term/term
If your use strict UTMs, you can only use the query parameters that start with
utm_.
We don’t store the rest of the query parameters. But some customers have non-personal data in their query parameters—for example, product-id or article-slug. We allow collecting those parameters as long as they are specified via our script settings.
If you want to capture product-id and article-slug from your website’s URLs, you can specify the following data-allow-params-setting:
<script
data-allow-params="product-id,article-slug"
src="https://scripts.simpleanalyticscdn.com/latest.js"
></script>
Warning: Defined parameters in
data-allow-paramsare case-sensitive.
Read more on how to use URL parameters on your website.