XI IDoc complex mapping problem - help needed!

Question

Hi all,
I am mapping WPUBON IDoc (sent as IDoc XML file) to WPUBON IDoc in R/3. However, I have a complex mapping requirement that I am trying to use the graphical tool for.
Source segment structure is such that we have:
E1WPB01 (header) has one or many E1WPB02 (items) and E1WPB05 (coupons).
E1WPB02 (items) have one or many E1WPB03 (item conditions).
So for each IDoc, we can have many items (E1WPB02), each item can have many conditions (E1WPB03) and each IDoc can have many coupons (E1WPB05).
For each E1WPB05 received, we need to take the value and divide it proportionately in order to add an extra E1WPB03 discount condition segment to each E1WPB02 item (we are a retailer and this will allow us to break down customer coupon discounts across each item in the basket). For example, if we have 2 E1WPB02 items with values $2 and $3 and the coupon is worth $1, item 1 needs a new E1WPB03 segment with a value of $0.40 and item 2 needs one with a value of $0.60.
This process needs to occur for each E1WPB05 segment (customers could have more than one coupon). No E1WPB05 segments are required in the target IDoc.
I have tried a few things but really am a bit stuck on where to start.... any ideas anyone?
Thankyou.
Stuart Richards

Answer 1

Stefan,
Here's some sample source XML:
<?xml version="1.0" encoding="UTF-8"?>
<WPUBON01>
   <IDOC>
      <EDI_DC40>
         <TABNAM>EDI_DC40</TABNAM>
         <MANDT>104</MANDT>
         <DOCNUM/>
         <DOCREL>620</DOCREL>
         <DIRECT>2</DIRECT>
         <IDOCTYP>WPUBON01</IDOCTYP>
         <MESTYP>WPUBON</MESTYP>
         <MESCOD>ST6</MESCOD>
         <SNDPOR>WPUX</SNDPOR>
         <SNDPRT>KU</SNDPRT>
         <SNDPRN>0799</SNDPRN>
         <RCVPOR>SAPRD1</RCVPOR>
         <RCVPRT>KU</RCVPRT>
         <RCVPRN>0799</RCVPRN>
         <REFINT>00000000000016</REFINT>
      </EDI_DC40>
      <E1WPB01 SEGMENT="1">
         <POSKREIS>0001</POSKREIS>
         <KASSID>1</KASSID>
         <VORGDATUM>20060107</VORGDATUM>
         <VORGZEIT>134512</VORGZEIT>
         <BONNUMMER>120572</BONNUMMER>
         <KASSIERER>4400</KASSIERER>
         <CSHNAME> </CSHNAME>
         <BELEGWAERS>GBP</BELEGWAERS>
         <E1WPB02 SEGMENT="2">
            <VORGANGART/>
            <QUALARTNR>ARTN</QUALARTNR>
            <ARTNR>000005034394436881</ARTNR>
            <VORZEICHEN>-</VORZEICHEN>
            <MENGE>1</MENGE>
            <REFBONNR> </REFBONNR>
            <E1WPB03 SEGMENT="3">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>10.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03>
         </E1WPB02>
         <E1WPB02 SEGMENT="5">
            <VORGANGART/>
            <QUALARTNR>ARTN</QUALARTNR>
            <ARTNR>000005034394471158</ARTNR>
            <VORZEICHEN>-</VORZEICHEN>
            <MENGE>1</MENGE>
            <REFBONNR> </REFBONNR>
            <E1WPB03 SEGMENT="6">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>20.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03>
         </E1WPB02>
         <E1WPB02 SEGMENT="8">
            <VORGANGART/>
            <QUALARTNR>ARTN</QUALARTNR>
            <ARTNR>000005034394469131</ARTNR>
            <VORZEICHEN>-</VORZEICHEN>
            <MENGE>1</MENGE>
            <REFBONNR> </REFBONNR>
            <E1WPB03 SEGMENT="9">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>30.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03>
         </E1WPB02>
         <E1WPB05 SEGMENT="11">
            <VORZEICHEN>+</VORZEICHEN>
            <RABATTART>PTCS</RABATTART>
            <RABVALUE>6.00</RABVALUE>
         </E1WPB05>
         <E1WPB06 SEGMENT="11">
            <VORZEICHEN>+</VORZEICHEN>
            <ZAHLART>PTCS</ZAHLART>
            <SUMME>10.00</SUMME>
            <KARTENNR/>
            <ZUONR>120572</ZUONR>
         </E1WPB06>
      </E1WPB01>
   </IDOC>
</WPUBON01>
So we have one coupon worth $6.00. We have 3 items in the basket worth $10, $20 and $30 respectively. The additional E1WPB03 for each will need to contain $1, $2 and $3 respectively to give:
<?xml version="1.0" encoding="UTF-8"?>
<WPUBON01>
   <IDOC>
      <EDI_DC40>
         <TABNAM>EDI_DC40</TABNAM>
         <MANDT>104</MANDT>
         <DOCNUM/>
         <DOCREL>620</DOCREL>
         <DIRECT>2</DIRECT>
         <IDOCTYP>WPUBON01</IDOCTYP>
         <MESTYP>WPUBON</MESTYP>
         <MESCOD>ST6</MESCOD>
         <SNDPOR>WPUX</SNDPOR>
         <SNDPRT>KU</SNDPRT>
         <SNDPRN>0799</SNDPRN>
         <RCVPOR>SAPRD1</RCVPOR>
         <RCVPRT>KU</RCVPRT>
         <RCVPRN>0799</RCVPRN>
         <REFINT>00000000000016</REFINT>
      </EDI_DC40>
      <E1WPB01 SEGMENT="1">
         <POSKREIS>0001</POSKREIS>
         <KASSID>1</KASSID>
         <VORGDATUM>20060107</VORGDATUM>
         <VORGZEIT>134512</VORGZEIT>
         <BONNUMMER>120572</BONNUMMER>
         <KASSIERER>4400</KASSIERER>
         <CSHNAME> </CSHNAME>
         <BELEGWAERS>GBP</BELEGWAERS>
         <E1WPB02 SEGMENT="2">
            <VORGANGART/>
            <QUALARTNR>ARTN</QUALARTNR>
            <ARTNR>000005034394436881</ARTNR>
            <VORZEICHEN>-</VORZEICHEN>
            <MENGE>1</MENGE>
            <REFBONNR> </REFBONNR>
            <E1WPB03 SEGMENT="3">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>10.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03>
<b>           <E1WPB03 SEGMENT="9">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>1.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03></b>
         </E1WPB02>
         <E1WPB02 SEGMENT="5">
            <VORGANGART/>
            <QUALARTNR>ARTN</QUALARTNR>
            <ARTNR>000005034394471158</ARTNR>
            <VORZEICHEN>-</VORZEICHEN>
            <MENGE>1</MENGE>
            <REFBONNR> </REFBONNR>
            <E1WPB03 SEGMENT="6">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>20.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03>
<b>           <E1WPB03 SEGMENT="9">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>2.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03></b>
         </E1WPB02>
         <E1WPB02 SEGMENT="8">
            <VORGANGART/>
            <QUALARTNR>ARTN</QUALARTNR>
            <ARTNR>000005034394469131</ARTNR>
            <VORZEICHEN>-</VORZEICHEN>
            <MENGE>1</MENGE>
            <REFBONNR> </REFBONNR>
            <E1WPB03 SEGMENT="9">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>30.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03>
<b>           <E1WPB03 SEGMENT="9">
               <VORZEICHEN/>
               <KONDITION>PN10</KONDITION>
               <KONDVALUE>3.00</KONDVALUE>
               <CONDID/>
               <QUALCONDID/>
            </E1WPB03></b>
         </E1WPB02>
         <E1WPB06 SEGMENT="11">
            <VORZEICHEN>+</VORZEICHEN>
            <ZAHLART>PTCS</ZAHLART>
            <SUMME>10.00</SUMME>
            <KARTENNR/>
            <ZUONR>120572</ZUONR>
         </E1WPB06>
      </E1WPB01>
   </IDOC>
</WPUBON01>
The 3 new segments required are highlighted in bold. Note that coupon segment can be repeating but is not required in the target message.
Cheers