Mainly for student and long stay activities, we need that Mews manage payments for guaranty. This payment is done by customer at beginning of reservation and put into bank in our side but doesn't corresponds to any sale.
At the end of reservation (1 year after or few months after), if there is no damage in the appartment, we will give back to customer this payment for guaranty. if there is damages in appartment, part of payment guarantee amount will be give back to customer, other part will be kept and a product of "appartment damages" will be add to the bill.
From accounting point of view, these payments are tracked into different accounts. We need to track the payment method used "CB, cash, etc..." and the fact that it's for guaranty.