Updating customer records
Customers will always have to provide this information at checkout.
The customer resource instance also stores some additional information about the customer for the benefit of the shop owner, including: the number of orders, the amount of money s/he has spent and number of orders s/he has made throughout his/her history with the shop as well as the shop owner's notes and tags for the customer.
Customer accounts store contact information for the customer, saving logged-in customers the trouble of having to provide it at every checkout.
A customer resource instance represents a customer account with the shop.There are three options for this setting: The unique phone number for this customer.Attempting to assign the same phone number to multiple customers will return an error.Of course, if what you really want to do is directly connect to your billing system from XC2, this service can be provided by XC2 Software Solutions.We can also provide solutions to send data back to be made available to your billing system.