Message split based on Element value

Question

Hi all,
I am looking for a way to split my source message into multiple target messages based on the Material element.
My Source and Target structures are exactly the same.
What i am trying to do is read from a order related flat file with multiple Materials and then create multiple flat files based on each material. So basically, each target file will have all the order info for EACH material.
In MM i tried to change the occurance of the target message from 1 to 0..unbounded but was not succesful.
Any help is appreciated. Please see below example source and desired target messages
Source Message:
   <Header>
      <GUID1>E663336789</GUID1>
   </Header>
   <Data>
      <Order>50000890</Order>
      <Material>Mat1</Material>
   </Data>
   <Data>
      <Order>50000891</Order>
      <Material>Mat2</Material>
   </Data>
   <Data>
      <Order>50000892</Order>
      <Material>Mat1</Material>
   </Data>
   <Data>
      <Order>50000892</Order>
      <Material>Mat2</Material>
   </Data>
Expected Result ->First Split Message
<Header>
      <GUID1>E663336789</GUID1>
   </Header>
   <Data>
      <Order>50000890</Order>
      <Material>Mat1</Material>
   </Data>
   <Data>
      <Order>50000892</Order>
      <Material>Mat1</Material>
   </Data>
Expected Result ->Second Split Message
<Header>
      <GUID1>E663336789</GUID1>
   </Header>
   <Data>
      <Order>50000891</Order>
      <Material>Mat2</Material>
   </Data>
   <Data>
      <Order>50000892</Order>
      <Material>Mat2</Material>
   </Data>

Answer 1

Hi Lekshmi,
I tried your suggestion but am facing some problems. Based on certain combinations of Material#'s that i enter, sometimes the message split works correctly and sometimes it does not work correctly. At times, it would even create an empty 'Inbound_Msg1_MT' element. In the below example, i should be seeing 2 messages - one for 'Mat1' and the other for 'Mat2', but i just see 1 message split for 'Mat1'.
Any suggestions? TIA
Source
<ns0:Message1>
<ns1:Outbound_Msg1_MT xmlns:ns1="http://Test/Test">
<Header>
<GUID1>HDR</GUID1>
</Header>
<Data>
<Order>1</Order>
<Material>Mat1</Material>
</Data>
<Data>
<Order>2</Order>
<Material>Mat2</Material>
</Data>
</ns1:Outbound_Msg1_MT>
</ns0:Message1>
</ns0:Messages>
Result
<ns0:Message1>
<ns1:Inbound_Msg1_MT xmlns:ns1="http://Test/Test">
<Header>
<GUID1>HDR</GUID1>
</Header>
<Data>
<Order>1</Order>
<Material>Mat1</Material>
</Data>
</ns1:Inbound_Msg1_MT>
</ns0:Message1>
</ns0:Messages>
Mapping
Inbound_Msg1_MT
Material>removeContexts>sort>SplitByValue(Value Change)>Inbound_Msg1_MT
Header
Material>removeContexts>sort>SplitByValue(Value Change)>Header
GUID1
Material>removeContexts->useOneAsMany>SplitByValue(Each value)-->GUID1
Data
Data>removeContexts>formatByExample(1)
Material>removeContexts>sort>SplitByValue(Value Change)>formatByExample(2)
formatByExample-->Data
Order
Material>removeContexts>SortByKey(1)
Order>removeContexts>SortByKey(2)
SortByKey-->formatByExample(1)
Material>removeContexts>sort>SplitByValue(Each value)>formatByExample(2)
formatByExample->Order
Material
Material>removeContexts>sort>SplitByValue (EachValue)>Material