changes according to the test

repositories/orderRepository.go

@@ -1522,6 +1522,23 @@ func (r *orderRepository) createOrderTx(tx *gorm.DB, data models.Orders) (models
 		})
 	}
 
+	// An order has to name the outlet it is placed at, and one that did not was
+	// rejected as though the shop were empty.
+	//
+	// Stock is held per outlet: availableStock filters `locationid = ?`, so with
+	// 0 it matches no ledger row and returns 0 for every product. Each line then
+	// failed the check below with "insufficient stock ... available 0" — for a
+	// product sitting on the shelf with 25 of them. The message named the wrong
+	// thing entirely and sent people hunting for stock that was already there,
+	// which is the most expensive kind of error: confidently wrong.
+	//
+	// Checked per line, because a line may carry its own outlet and otherwise
+	// falls back to the header's.
+	if err := assertOutletNamed(lines); err != nil {
+		tx.Rollback()
+		return models.Orders{}, err
+	}
+
 	if err := lockStockRows(tx, data.Tenantid, lines); err != nil {
 		tx.Rollback()
 		return models.Orders{}, err