Metoda grupująca createShipmentReturn

<authData>
    <username>testomir</username>
    <password>testalski</password>
</authData>
<shipment>
    <shipmentInfo>
        <wayBill>12345678910</wayBill>
        <serviceType>ZC</serviceType>
        <bookCourier>true</bookCourier>
        <billing>
            <shippingPaymentType>RECEIVER</shippingPaymentType>
            <!-- określenie strony, która zostanie obciążona kosztami, możliwe opcje serviceType:
                RECEIVER - płaci odbiorca -->
            <billingAccountNumber>1204663</billingAccountNumber>
            <paymentType>BANK_TRANSFER</paymentType>
            <!-- wybór sposobu płatności, możliwe wartości paymentType:
                 BANK_TRANSFER - przelew (tylko dla klientów z umową i numerem SAP) -->
            <costsCenter>ABC1235</costsCenter>
        </billing>
        <specialServices>
            <item>
                <serviceType>UBEZP</serviceType>
                <serviceValue>20000</serviceValue>
            </item>
        </specialServices>
        <shipmentTime>
            <labelExpDate>2017-07-31</labelExpDate>
        </shipmentTime>
        <labelType>BLP</labelType>
        <!-- wybór etykiety zwrotnej, możliwe wartości labelType:
            BLP - etykieta BLP w formacie PDF
            LBLP - etykieta BLP w formacie PDF A4
            ZBLP - etykieta BLP w formacie drukarek Zebra -->
    </shipmentInfo>
    <content>Gra komputerowa</content>
    <comment>ostrożnie</comment>
    <reference>REF TESTREF TESTSTOP</reference>
    <primaryWaybillNumber>nr zlecenia</primaryWaybillNumber>
    <ship>
        <shipper>
            <preaviso>
                <personName>3e Spółka Jawna</personName>
                <phoneNumber>123456789</phoneNumber>
                <emailAddress>testomir@gmail.pl</emailAddress>
            </preaviso>
            <contact>
                <personName>3e Spółka Jawna</personName>
                <phoneNumber>123456789</phoneNumber>
                <emailAddress>testomir@gmail.pl</emailAddress>
            </contact>
            <address>
                <country>CZ</country>
                <name>Janek</name>
                <postalCode>50011</postalCode>
                <city>Test</city>
                <street>Test</street>
                <houseNumber>9</houseNumber>
                <apartmentNumber>59</apartmentNumber>
            </address>
        </shipper>
        <receiver>
            <preaviso>
                <personName>3e Spółka Jawna</personName>
                <phoneNumber>123456789</phoneNumber>
                <emailAddress>testomir@gmail.pl</emailAddress>
            </preaviso>
            <contact>
                <personName>3e Spółka Jawna</personName>
                <phoneNumber>123456789</phoneNumber>
                <emailAddress>testomir@gmail.pl</emailAddress>
            </contact>
            <address>
                <country>PL</country>
                <name>Ja</name>
                <postalCode>00001</postalCode>
                <city>Wawa</city>
                <street>Leśna</street>
                <houseNumber>9</houseNumber>
                <apartmentNumber>59</apartmentNumber>
                <postnummer>123456789</postnummer>
                <isPackstation>false</isPackstation>
                <isPostfiliale>false</isPostfiliale>
            </address>
        </receiver>
    </ship>
    <pieceList>
        <item>
            <type>PACKAGE</type>
            <!-- typ paczki, możliwe wartości:
                ENVELOPE - przesyłka kopertowa
                PACKAGE - paczka -->
            <weight>20</weight>
            <width>60</width>
            <height>40</height>
            <length>40</length>
            <quantity>1</quantity>
        </item>
    </pieceList>
</shipment>