Reading Buffer in BADI BBP_DRIVER_DETERMINE

Hi All,
I am implementing a BADI to update the freight details in ECC system when a PO is changed in SRM portal. For this I am using the methods
--->      lo_pd_model = /sapsrm/cl_pdo_model_factory=>get_instance( ).
and
--->    call method /sapsrm/cl_pdo_factory_po_adv=>create_new_instance
        exporting
          iv_process_type     = lv_process_type
          iv_sub_process_type = ''
        importing
          eo_po_instance      = lo_pdo_po
        changing
          co_message_handler = mo_pdo_message_consumer.
for the first method I didnt get any data when I checked in debugging
for the second method I dont know what value to pass to lv_process_type.All I have for this BADI is object,logical system,system type .Once I get the instance I can get the GUID and then I can get the item details through GET _DETAILS
code for getting GUID:
      mo_pdo ?= lo_pdo_po.
      call method mo_pdo->get_header_guid
        receiving
          rv_header_guid = mv_bo_guid.
Please help me how to read the buffer and get item details.
Regards,
Ram

Hi Rajeev,
Please check these entries
Proceed as follows to change the required entries of the driver function modules for a link to an R/3 4.70 server:
Start Transaction SM30 and enter BBP_FUNCTION_MAP under 'Table/view'.
Select 'Maintain'.
Enter the new value 'Function module' for keys 'Object type', 'Method' and 'System type' of the following eleven entries:
Object type Method              System type Function module
BUDGET      Read                R/3_4.70 B470_BUDGET_READ
BUS2012     CreateFromData      R/3_4.70 B470_PO_CREATE
BUS2012    GetDetail           R/3_4.70 B470_PO_GETDETAIL
BUS2091    Create              R/3_4.70 B470_ENTRYSHEET_CREATE
BUS2091    GetDetail           R/3_4.70 B470_ENTRYSHEET_GETDETAIL
BUS2093     CreateFromData      R/3_4.70 B470_RESERVATION_CREATE
BUS2093    GetDetail           R/3_4.70 B470_RESERVATION_GETDETAIL
BUS2105     Change              R/3_4.70 B470_REQUISITION_CHANGE
BUS2105     CreateFromData      R/3_4.70 B470_REQUISITION_CREATE
BUS2105    GetDetail           R/3_4.70 B470_REQUISITION_GETDETAIL
BUS6001 CheckAccountAssignment R/3_4.70 B470_ACCSERV_CHECKACCASSIGNMT
Save the entries.
regards,nishant
This is extract of note Note 642530 - Driver function modules for 4.70 connection
Please reward if this helps

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Message Edited by YeungJohn on 11-20-2008 03:48 PM
Message Edited by YeungJohn on 11-20-2008 03:49 PM
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Reading Buffer in BADI BBP_DRIVER_DETERMINE

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