There are functions delivered by the Shop API that are usable only if the customer has the right to use them. The following ones are usable only for registered customers:
account_loadCustomer
account_updateCustomer
cart_merge
Handling for customer addresses depend on the type of address:
It is important to know, that a registered customer can have only one billing address at the time which can be modified via
account_updateCustomer
.
A registered customer can have as many shipping addresses as he likes. They can be managed via
account_updateCustomer
.