Is there a way to register a transaction in a website using nothing but the Tag Manager? So without any modification of the website itself? I already have a trigger that fires at the right moment that registers an event.
I don't care about the value of the transaction id, or the total value of the transaction; except they're required so I need to find a way of generating a unique transaction id.
I am aware how pointless this makes a transaction, but I have a customer who insists because ... I just don't know.