Hello, I want to install openerp post in my shop and I have some doubts: 1. - Can i do returns? That is, negative sales 2. - For those negative sales, can i make vouchers for future sales? 3. - how to Use the following methods of payment: Receivables with a voucher previously issued a negative sale. Receivables with a gift voucher Receivables with a customer card that has a balance leave sale as uncollected charge a sale of previous days All this inside de POS
thanks
I will try to explain better:
I will try to explain better: