Function module expression for dynamic value for Cost center in BRF

Question

Hello Experts,
We are in SRM 7.0 and our business object is shopping cart using BRF.
Right now we have Cost Center Approver and its evaluation id ()zev_sc_**_*) has expression zc_sc_*_** that checks whether overallvalue >= 5000. It initiates cost center approver only if value is greater than or equal to 5000. But this is static expression. We want it in a dynamic way so that we don't have to modify this value frequently. Therefore we have set approach to use an expression of Function Module BAdI as expression. We have a new z table which contains value field zval. Now I want to know how or what should be the process so that this FM knows the corresponding value from a z table that user might select in the SC.How it should be linked to this. I am using /SAPSRM/WF_BRF_0EXP000 function module. Please advise where should the code be written ? Any method ? And what should be the exporting and importing parameters for this ?
Right now I can see EV_VALUE, EV_TYPE, EV_CURRENCY etc as exporting paramters. Looking for your suggestions experts.
Thank you.
Best regards.

Answer 1

Dear abhijeet,
just follow the steps.
i) I believe you have created the event as Zev_***  with implememt Class     0EVENT.
ii) copy the std fm /SAPSRM/WF_BRF_0EXP000 to z custom fm
iii)  since you want to have an  expression as function module procurement type create expression  with                                                                               
expression type  0CF001
                                                                                result type B ( boolean)
                                                                                Buffering as event-controlled buffering
and very important procurement type as function module.
iv) immediatly you may find written as AccessFM where pass your custom z function module.
v) finally link this expression to your event.
In the custom function module  the exporting parameter EV_VALUE is solely responsible for identifieng the approval based upon the approval criteria. If the field EV_VALUE = 'X' this notify that the approval is required  for current process level, otherwise if it is initial then it will skip the current level and continue with the next level.
whatever your coding should be written in FM.
just look into below code
  DATA LO_WF_BRF_EVENT       TYPE REF TO /SAPSRM/CL_WF_BRF_EVENT.
  DATA LO_CONTEXT_PROVIDER   TYPE REF TO /SAPSRM/IF_WF_CONTEXT_PROVIDER.
  DATA: LV_HEADER LIKE BBP_PDS_SC_HEADER_D.
  DATA: LT_ITEM TYPE STANDARD TABLE OF BBP_PDS_SC_ITEM_D.
  LO_WF_BRF_EVENT ?= IO_EVENT.
  LO_CONTEXT_PROVIDER = LO_WF_BRF_EVENT->GET_CONTEXT_PROVIDER( ).
  CALL METHOD LO_CONTEXT_PROVIDER->GET_DOCUMENT
    IMPORTING
      EV_DOCUMENT_GUID = LV_DOCUMENT_GUID
      EV_DOCUMENT_TYPE = LV_DOCUMENT_TYPE.
pass this guid in the below function module in order to get the SC details.
GET SC DETAILS
  CALL FUNCTION 'BBP_PD_SC_GETDETAIL'
    EXPORTING
      I_GUID    = LV_DOCUMENT_GUID
    IMPORTING
      E_HEADER  = LV_HEADER
    TABLES
      E_ITEM    = LT_ITEM
After that loop the internal  table LT__ITEM   and you decide based upon your approval criteria for each line item level wheather the gross price of  line item is exceed 5000k or not.
you should decide the value for field EV_VALUE within the loop so that each line item will be verified for approval.
Pls contribute if this helpfull.
regards
sahil purushan