Splitting XML Incoming Message for BizTalk

Question

Hi,
   I have a BizTalk XML Input message like the one  below and I would like to generate single xml message for every BacklogMaterialNode I have.
Source Format.( Complete Message)
==========================
<BacklogSnapshot xmlns="http://www.myorg.com/InventoryBroker" version="1.0" plant="NA01" pubdate="2014-04-14T09:30:00Z">
  <BacklogGroup id="123456789012">
    <BacklogMaterial SAPMaterialNumber="100010">
      <Quantity UOM="EA">11</Quantity>
    </BacklogMaterial>
    <BacklogMaterial SAPMaterialNumber="100020">
      <Quantity UOM="EA">12</Quantity>
    </BacklogMaterial>
    <!-- ... -->
  </BacklogGroup>
  <comment><!-- TODO --></comment>
</BacklogSnapshot>
I would like to create separate xml message for every node "<BacklogMaterial>" Like the below one.
Message 1.
============
<BacklogSnapshot xmlns="http://www.myorg.com/InventoryBroker" version="1.0" plant="NA01" pubdate="2014-04-14T09:30:00Z">
  <BacklogGroup id="123456789012">
    <BacklogMaterial SAPMaterialNumber="100010">
      <Quantity UOM="EA">11</Quantity>
    </BacklogMaterial>
     </BacklogGroup>
  <comment><!-- TODO --></comment>
</BacklogSnapshot>
Message 2.
==============
<BacklogSnapshot xmlns="http://www.myorg.com/InventoryBroker" version="1.0" plant="NA01" pubdate="2014-04-14T09:30:00Z">
  <BacklogGroup id="123456789012">
     <BacklogMaterial SAPMaterialNumber="100020">
      <Quantity UOM="EA">12</Quantity>
    </BacklogMaterial>
    <!-- ... -->
  </BacklogGroup>
  <comment><!-- TODO --></comment>
</BacklogSnapshot>
Objective is create single IDOC for every BacklogMaterial Node and Post the IDOC into SAP. 
-Saravan.

Answer 1

Hi Saravan,
it is possible, in theory, to do what you want to do. However you have not supplied enough information to let us resolve what is going on in your case.
Firstly, in all the documents sent to SAP I've never seen the Wcf adapter or SAP duplicate a Message and so I expect that it is one of your maps that is doing that. Also unless you really want to send multiple Idocs to SAP ERP in one batch I would stick
to a single IDOC at a time. However that is your decision and it depends on the business and performance requirements placed upon you.
I will sketch out  a technique that I have seen working before, it is not the only way and there are probably several others. The idea is to use a two-pass approach, take each "BacklogSnapshot" and map it to the form of an Envelope with children
that will be mapped to single Idocs. Then you have to get that single file through the xml disassembler again where it will split the file into a series of messages that can then be mapped to single Idocs. 
I suspect you have already taken an approach similar to this? or perhaps even tried to go direct to a "Send",     i.e. envelope to envelope? I can't think of anything wrong with this approach either. I would check your Map again, I suspect
data is getting jumbled in the map.
It is also possible there is a subscription problem, i.e. each message is getting sent twice to the adapter - however if that is the case it would replicate message and not jumble it. 
mark