Netting the open quantity

Question

Hi Guys,
             I have PO quantity(EKPO-MENGE)  and goods receipt quantity(MSEG-ERFMG). Here i want to calculate the open PO quantity which is  EKPO-MENGE - MSEG-ERFMG .But here if  multiple material docements r getting created for the same for one PO and partial goods receipt quantity is done thru these multiple material documents. then how to net the open quantity.
For example :
PO no   PO quantity material documents GR quantity
10            10             100                              1
                                200                              2
                                300                             -2
                                400                              3
Now i need  the open quantity as  9
                                                  7
                                                  9
                                                  6.
Even i tried with At new Ebeln.but i am not getting it.
Can anybody help me in this.

Answer 1

Hi,
Open PO Line Item Qty = PO Line Item Qty - ( Sum(All GR Qty for PO Line Item ) -
                                                                    Sum(All GR Return Qty for PO Line Item) ).
PO Line Item Qty = EKPO-MENGE.
GR QTY for PO Line Item = EKBE-MENGE with Movement Type = '101'.
GR Return QTY for PO Line Item = EKBE-MENGE with Movement Type = '102'.
SELECT  EKPOMENGE EKPOMEINS
FROM EKKO   INNER JOIN EKPO ON EKKOEBELN = EKPOEBELN
                       INNER JOIN EKET ON EKETEBELN = EKPOEBELN AND
                                                         EKETEBELP = EKPOEBELP
                       INNER JOIN LFA1 ON LFA1LIFNR = EKKOLIFNR
  INTO CORRESPONDING FIELDS OF TABLE I_PO
  WHERE  EKKO~BUKRS =  P_BUKRS AND
    EKPO~WERKS =  P_WERKS AND
    EKKO~LIFNR IN S_LIFNR AND
    EKPO~MEINS IN S_MEINS AND
    EKET~EINDT IN S_EINDT AND
    EKKO~BSTYP =  'F'     AND "Select PO Only"
    EKKO~LOEKZ = ' '      AND "PO should not be deleted"
    EKPO~LOEKZ = ' '  .       "Line Item Should not be DEL
Fetch the PO History Details for the Records of the Internal Table i_po.
  LOOP AT I_PO.
    SELECT   EBELN EBELP BWART MENGE WRBTR
    FROM    EKBE
    APPENDING CORRESPONDING FIELDS OF TABLE   I_EKBE
    WHERE  EBELN = I_PO-EBELN AND
              EBELP = I_PO-EBELP AND
              BEWTP IN ('E','F').
  ENDLOOP.
Edited by: AJAY TIWARI on Oct 19, 2008 5:00 PM