When does shopify trigger grpd webhooks in my app ?

[WePlus]

Hello,

I'm trying to figure out when my app receives a request from shopify's GRPD management webhooks.

For example, in the case where the customer requests the deletion of his personal information: the store owner will do the necessary in the BO of his shop from the ‘customers’ tab, then ...

Is the webhook activated :
- when the ‘delete personal data’ button is clicked?
-10 days after the store owner clicks on the ‘delete personal data’ button?
-180 days after the customer's last order (because by default Shopify does not delete personal data when the customer has placed an order in the last six months)?

Can you help me understand this better?

Thank you