How to pass item payment term through Idoc segment E1EDP18

Question

We use ORDERS idoc to create sales orders and our customers want to replace the default payment term at item level. I found segment E1EDP18 for this purpose but I don't exactly know how to use it, like where to put the payment term key. Can any one expain with the help of a clear  example how to indicate the payment term there ?
Below is a exerpt of the incoming idoc file I used for testing. In this test I put the paymentt term 0010 in but the information sent in idoc segment is just ignored.
E1EDP01                     10         625.00
    E1EDP05                        ZD64
    E1EDP05                        ZD66
    E1EDP19                     00269020000
    E1EDP18                     0020010
Many thanks

Answer 1

Hi,
         SAP program IDOC_INPUT_ORDERS is not using the item level payment terms sent in IDOC segment P18 to fill the sales order so you need user exit to do this. The program is moving the item level information to an internal table xe1edp18 when the data is parsed from IDOC so you can use this to populate the screen information in the user exit 'CALL CUSTOMER-FUNCTION '002' (IDOC_INPUT_ORDERS).
Let me explain the process from EDI to SAP.
1) EDI 850 will have ITD segment at item level (Example ITD013  *2     *        *10 *        *30 *          *        *) you can ask your EDI team to map them to P18 segment as it has the number of days and also the percentage for cash discount. P18 has 3 qualifiers so you can map 3 different temrs (For example the above sample is 1 Term is 2% in 10 days and Term 2 is net 30 days)
2) During IDOC parsing the program is already filling internal table xe1edp18.
3) In the user exit CUSTOMER-FUNCTION '002' you need to search for the SAP payment terms with the number of days and percentage (This is available in the table T052). Once you find the SAP terms key, you need to populate it for each item. You need to do this after the program filled the item billing data.
Dynpro item business data billin details -
    PERFORM VA01_DYNPRO_POSITION_PDE3 USING XVBAP-POSNR.
*-Zusätzliche Daten für Dynpros vorsehen (Kundenerweiterungen)----
*-additional data's for new dynpro fields (customer exit)----
    SY-SUBRC = 0.
    PERFORM CUSTOMER_FUNCTION_DYNPRO.  -- THis is the user exit call
Hope this is useful.
Ram