Hierarchical structure message mapping in PI

Question

Hello All,
I have a source and target structure in graphical message mapping
<?xml version="1.0" encoding="UTF-8"?>
<Material_MT>
   <row>    0..unbounded
      <MATERIAL_ID>1234</MATERIAL_ID>
      <DEL_FLAG>
     </row>
  <row>    0..unbounded
      <MATERIAL_ID>1234</MATERIAL_ID>
      <DEL_FLAG>Y</DEL_FLAG>
     </row>
  <row>  
      <MATERIAL_ID>4567</MATERIAL_ID>
      <DEL_FLAG>N</DEL_FLAG>
     </row>
<row>  
      <MATERIAL_ID>1234</MATERIAL_ID>   
      <DEL_FLAG>N</DEL_FLAG>
     </row>
</Material_MT
Materials can repeat in the source structure but their flags could be different
Target structure
<Mat>  1..1
<Mat_update> 0..unbounded
   <Matid>
           <Matreg>
                 <Matcomplete/>
                 <tuple>
                      <id/>
                  </tuple>    
           </Matreg>
     </Matid>
     <recordind>
            <id>
      </recordind>
</Mat_update>
Now, the requirement is
1) For each <MATERIAL_ID>  in the source, map its corresponding flag <DEL_FLAG> value <Matcomplete/ field in the target ,
2) For each  <MATERIAL_ID> in the source, take its corresponding value and make a soap  lookup call in mdm to get tuple ids (mutiple value per material possible) and map each to <id> (under <tuple>)
3) For each <MATERIAL_ID> in the source, take its corresponding value and make a soap lookup call in mdm to get <recordind> (single value per material) and map to <id> under <recordind>
Now, I have done soap lookup for 2)  and getting multiple tupleIDs for a single material
For 3) also, I am doing a lookup and getting a single ID back 
Both 2)   and 3) are achieved using  udf soap lookup  - 2) will return a resultlist and 3 a single string value
My main question is how to do message mapping for achieving step1, 2 and 3. Pls help...its needed badly
Thanks
mike

Answer 1

Hi Mike,
Below is the logic as per my understanding.
1- Direct mapping from DEL_FLAG> value <Matcomplete/ field in the target
2- After lookup Map multiple Tuple Id's to Tuble node.
3-After lookup Map  recordind to Id .
If you want it in detail let me know the sample output structure with values.
Regards,
Sudha