Any Exit/BADI/Enh point to modify COOI table contents before PR/PO save

Question

Hi Experts,
whenever we create/change Purchase requisition/Purchase Order,
table COOI(Commitment line items) gets updated with the Purchase requisition/purchase order
item details and table COSP gets updated with the sum values of COOI entries order by primary keys
of the table.For better explanation i am taking fields from tables
COOI (taken few fields for example)
REFBT     REFBN     RFKNT      LIFNR     HRKFT      OBJNR     WTGBTR(Total value in transaction cuu)
1234     0010     00512     (empty)     (empty)     PR00148     10
1234     0020     00512     (empty)     (empty)     PR00148     10
1234     0030     00512     (empty)     (empty)     PR00149     20
table updated COSP with sum value of COOI order by it's primary keys
COSP (taken few fields for example)
OBJNR     KSTAR     HRKFT     WTG010
PR00148     00512     (empty)     20
PR00149     00512     (empty)     20
I want to pass  the value HRKFT(CO key subnumber/Origin grp) to table COOI
to update each commitment line item,so that sum will update table COSP order by it's primary keys
The same example revised with origin group.
COOI
REFBT     REFBN     RFKNT      LIFNR     HRKFT      OBJNR     WTGBTR(Total value in transaction cuu)
1234     0010     00512     (empty)     3100     PR00148     10
1234     0020     00512     (empty)     3200     PR00148     10
1234     0030     00512     (empty)     3300     PR00149     20
table COSP get update with sum value of COOI order by it's primary keys
of COSP considering HRKFT values now(taken few fields for example)
OBJNR     KSTAR     HRKFT     WTG010
PR00148     00512     3100     10
PR00148     00512     3200     10
PR00149     00512     3200     20
and this table is used in report painter to show the commitment
COSTS's segregated by Origin Group.
I need to show the report in report painter HRKFT(origin grp) wise cost's for commitments.
which is using the COSP table to display.
Now my requirement is any exit/BADI/Enhancement where i can modify table COOI contents
with HRKFT value for each line item before sum calucalation for COSP table in detail while creating
Purhcase requisition/Purchase order.
We are using SAP GUI version 6.0 
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Edited by: Rob Burbank on May 15, 2011 4:28 PM

Answer 1

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