| QR scan before creating the order. The customer scans a valid QR code before placing the order. | App displays a loading screen. | Verify the fixed_amount=true on the Point of Sale. |
| QR scanning. The user scans a valid QR code after the order creation. | App showcases a checkout screen. | Verify the amount displayed on checkout. |
| Approved payment. The user makes a successful payment. | POS system receives information about the approved payment. | Verify Notifications receipt. |
| Rejected payment. The user makes a rejected payment. | POS system receives information about the rejected payment and continues waiting for the order to be paid. | merchant_order status must be opened. |
| Second payment attempt. At first, the user performs a rejected payment and then executes an approved payment. | POS system receives information about the rejected payment and of the approved one later. | Do not remove the order after a rejected payment. |
| Refunds. The payment refund is performed from the Point of Sale. | Refunds impact the buyer account. | See Refunds and cancellations. |
| Cancel order. The user decides to pay instead with cash. | The order is removed; thus, when scanning the QR only the loading screen is displayed. | Remove order from the Point of Sale. |