how to map the source and target of below structures?

[Former Member]

error shows in the below mapping is "Cannot produce target element /ns0:Messages/ns0:Message2/ns1:MT_SALESITEM_IN/SALESITEM[2]/SALESDOCNO. Check xml instance is valid for source xsd and target-field mapping fulfills requirements of target xsd".

the source and target structures are

SOURCE STRUCTURE

-

---

<?xml version="1.0" encoding="UTF-8"?>

<ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge">

<ns0:Message1>

<ns1:MT_SALES_OUT xmlns:ns1="http://sap.com/bpmsplit">

<SALES>

<HEADER>

<DOCNO>1000</DOCNO>

<ORG>2000</ORG>

<PLANT>3000</PLANT>

</HEADER>

<ITEM>

<ITEMNO>10</ITEMNO>

<QTY>100</QTY>

<PRICE>100000</PRICE>

</ITEM>

<ITEM>

<ITEMNO>20</ITEMNO>

<QTY>200</QTY>

<PRICE>200000</PRICE>

</ITEM>

</SALES>

</ns1:MT_SALES_OUT>

</ns0:Message1>

</ns0:Messages>

TARGET STRUCTURE

-

---

<?xml version="1.0" encoding="UTF-8"?>

<ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge"><ns0:Message1><ns1:MT_SALESHEADER_IN xmlns:ns1="http://sap.com/bpmsplit">

<SALESHEADER>

<SALESDOCNO>1000</SALESDOCNO>

<ORG>2000</ORG>

<PLANT>3000</PLANT>

</SALESHEADER>

</ns1:MT_SALESHEADER_IN></ns0:Message1><ns0:Message2><ns1:MT_SALESITEM_IN xmlns:ns1="http://sap.com/bpmsplit">

<SALESITEM>

<SALESDOCNO>1000</SALESDOCNO>

<ITEMNO>10</ITEMNO>

<QTY>100</QTY>

<PRICE>100000</PRICE>

</SALESITEM>

</ns1:MT_SALESITEM_IN></ns0:Message2></ns0:Messages>

My Question is

_____________

For the above only one instance is created in Target if we give only one Instance in Source ITEM otherwise it shows an error like

I want SALESITEM in Target Structure should generate multiple instances for every ITEM Details in Source structure .

Can anyone suggest me how to create multiple SALESITEM Instances in Target for every Instance of ITEM in SOurce Structure?

[Former Member]

thank u