Creates a loyalty account for a site contact.
To create a new loyalty account, a customer must first be a site contact with a contact ID, see the Contacts API. The site must also have an active loyalty program before loyalty accounts can be created.
You can only call this method when authenticated as a Wix app or Wix user identity.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.