How Credit Note Processing and Vehicle Sale Reversals Work

Source: invoice.rb:451-479, invoice.rb:537-546, invoices_controller.rb:2827-2828

• When processing a credit containing a vehicle sale, the vehicle's customer is reset to the company's internal_customer
• Date_of_sale and value_of_sale are cleared, sale_status returns to for_sale
• For credits, product quantity_on_hand is increased (stock is returned) instead of decreased
• TillPayments reversal credits cannot exceed the original invoice total
• Credit invoices recalculate the customer's credit_account balance; branch accounts are also updated if the customer has a branch_link
• TillPayments credit conversion forces cash_or_account to "C" and auto-generates a note with the original invoice reference

Support scenarios

• "I processed a credit note for a vehicle sale and the vehicle went back to for-sale" -> this is expected; the credit reversal undoes the sale and returns the vehicle to inventory
• "The credit total can't be more than the original invoice" -> this is a TillPayments reversal credit, which is capped at the original amount
• "The customer's account balance changed after the credit" -> credits recalculate the customer's credit account; this is the expected behaviour