Changes a customer's details. Send only what you want to change. The body has the same fields as Create customer.

What's replaced and what's kept

• A field or block you leave out keeps its current value.
• To clear a text field, such as phone, send '' or null. A field cleared with '' comes back as ''.
• customer_id can't be empty. If you clear it, BillPro creates a new 10-character ID.
• organisation, billing_address and shipping_address change only the fields you send.
• organisation: null removes the organisation. If the customer has none yet, send name too.
• billing_address: null is ignored. To clear the billing address, send each field as ''.
• shipping_address: null removes the shipping address and sets same_as_billing_address to false. Sending a shipping_address without same_as_billing_address: true also sets it to false.
• same_as_billing_address: true copies the billing address to the shipping address. Any shipping_address you send with it is ignored.
• The copy isn't kept in sync. When you change the billing address, send same_as_billing_address: true again, or the shipping address keeps the old copy.
• tag_list replaces all the customer's tags. Send [] to remove every tag. Leave it out to keep them. To change only the tags, use Replace customer tags.
• customer.status changes the status. Send active or dormant, in lowercase. Other values are ignored without an error, and the status doesn't change.

Existing orders keep the customer details they were created with. Only new orders use the updated details.

The response is the updated customer, without tags.