message mapping for E1EDPT1/E1EDPT2/TDLINE split and assign in proper context of E1EDPT2

hi all,

i've a source structure and target structure which looks like this below

        <L_PO1>

          <S_PO1>

            <D_330>30</D_330>

            <D_355>BD</D_355>

            <D_235>BP</D_235>

            <D_234>MAT1</D_234>

          </S_PO1>

          <L_PID>

            <S_PID>

              <D_349>F</D_349>

              <D_352>description which can have length 140 characters max</D_352>

            </S_PID>

          </L_PID>

          <L_PID>

            <S_PID>

              <D_349>F</D_349>

              <D_352>another description for the same MAT1 which also can have max 140 char</D_352>

            </S_PID>

          </L_PID>

        </L_PO1>

The target structure is a IDOC orders and it should look like this below after the mapping of item level segment

<E1EDP01 SEGMENT="1">

<MENGE>30</MENGE>

<MENEE>BD</MENEE>

<E1EDP19 SEGMENT="1">

<QUALF>001</QUALF>

<IDTNR>MAT1</IDTNR>

</E1EDP19>

<E1EDPT1 SEGMENT="1">

<TDID>Z001</TDID>

<TSSPRAS>E</TSSPRAS>

<E1EDPT2 SEGMENT="1">

<TDLINE>take first 70 characters of the description</TDLINE> "if the description is greater than 70 characters

<TDFORMAT>/</TDFORMAT>

</E1EDPT2>

<E1EDPT2 SEGMENT="1">

<TDLINE>remaining 70 characters or less from the description</TDLINE> "create a new TDLINE with a new context of E1EDPT2.

<TDFORMAT>/</TDFORMAT>

</E1EDPT2>

<E1EDPT2 SEGMENT="1">

<TDLINE>this description is not greater than 70 characters</TDLINE> " no need to split because it's not more than 70 characters.

<TDFORMAT>/</TDFORMAT>

</E1EDPT2>

</E1EDPT1>

</E1EDP01>

so, basically, I have to split description into 70 characters if its more than 70 characters and assign to a new TDLINE field.

howz it doable?

thx

mike