Gift Cards, Online & Offline payments
The payments are to directly attached to sales and purchases but with customer and supplier to maintain their journal account. This will allow you to add payment for any customer or supplier and system will automatically mark the sales and purchases as paid that means you can accept payment for multiple sales and purchases.
You can set offline account with details and can accept payment online. At the moment 4 gateways (Stripe (cards), PayPal Pro (redirect to PayPal and accept cards), PayPal Rest (cards), Authorize.net (cards)) are available. You can add gift cards and accept payments from these gift cards.