Hi @AN ,
You can still fire purchase events for your tags without using the e-commerce extension by mapping data variables to Ecommerce parameters for most of our tags.
For example, for the Facebook Pixel tag, you can map the Order ID and Sub Total parameters with any data variables in your data layer. When the Order ID is present, a purchase event is automatically fired. This is true for most of our tags that has an Ecommerce component.
Hope this information helps!
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