Why is the vat number in google ads optional?

[Markus64]

So, google ads says that the vat number is optional for running ads. On the other side they're using the reverse charge process which requires a vat number. In my case they used it even though i didn't gave them my vat number. My question is why they van do this?

 

[arnego2]

My question is why they van do this?

Welcome 

This question is best placed in the support Forum of Google. So far I know there is no Google employee as a member of the SEO Portal.