\Mollie\Api\Types\OrderLineUpdateOperationType::ADD, "data" => ["type" => \Mollie\Api\Types\OrderLineType::TYPE_DIGITAL, "name" => "Adding new orderline", "quantity" => 2, "sku" => "12345679", "totalAmount" => ["currency" => "EUR", "value" => "30.00"], "unitPrice" => ["currency" => "EUR", "value" => "15.00"], "vatAmount" => ["currency" => "EUR", "value" => "0.00"], "vatRate" => "0.00"]]; $updateOrderLine = ["operation" => \Mollie\Api\Types\OrderLineUpdateOperationType::UPDATE, "data" => ["id" => "odl_1.1l9vx0", "name" => "New order line name"]]; $cancelOrderLine = ["operation" => \Mollie\Api\Types\OrderLineUpdateOperationType::CANCEL, "data" => ["id" => "odl_1.4hqjw6"]]; $operations = [$addOrderLine, $updateOrderLine, $cancelOrderLine]; $order = $mollie->orderLines->updateMultiple('ord_pbjz8x', $operations); } catch (\Mollie\Api\Exceptions\ApiException $e) { /* * When updating order lines for orders that used a pay after delivery method such as Klarna Pay Later, the * supplier (Klarna) may decline the requested changes. This results in an error response from the Mollie API. * The order initial remains intact without applying the requested changes. */ echo "API call failed: " . \htmlspecialchars($e->getMessage()); }