lib/custom/src/MShop/Service/Provider/Payment/OmniPay.php
protected function saveTransationRef( \Aimeos\MShop\Order\Item\Base\Iface $baseItem, $ref )
	{
		$type = \Aimeos\MShop\Order\Item\Base\Service\Base::TYPE_PAYMENT;
		$serviceItem = $this->getBasketService( $baseItem, $type, $this->getServiceItem()->getCode() );

		$attr = array( 'TRANSACTIONID' => $ref );
		$this->setAttributes( $serviceItem, $attr, 'payment/omnipay' );
		$this->saveOrderBase( $baseItem );
	}
protected function saveTransationRef( \Aimeos\MShop\Order\Item\Base\Iface $baseItem, $ref )
	{
		$type = \Aimeos\MShop\Order\Item\Base\Service\Base::TYPE_PAYMENT;
		$serviceItem = $this->getBasketService( $baseItem, $type, $this->getServiceItem()->getCode() );

		$attr = array( 'TRANSACTIONID' => $ref );
		$this->setAttributes( $serviceItem, $attr, 'payment/omnipay' );
		$this->saveOrderBase( $baseItem );
	}
Adds the transation reference to the order service attributes.

@param \Aimeos\MShop\Order\Item\Base\Iface $baseItem Order base object with service items attached
@param string $ref Transaction reference from the payment gateway