2LIS_03_BF DS Enhancement

Question

Hello all,
My Customer wants 2 news fields from MARA table in query column, the fields are
YBENCODE1 - Term code - MARA
YTYPKURZB - Type short description - MARA
On analysing I found data for infoprovider comes from datasource
2LIS_03_BF and 2LIS_03_BX.
I saw the datasource 2LIS_03_BF in LBWE and found all fields come from MSEG table.
So I believe I hav to enhance this datasrc 2LIS_03_BF by append stuctre and code in userexit.
Now pls guide me how to proceed further steps. As MSEG is a cluster table I bit scared to
do this task.
1. Give me the steps
2.What will be the logic to link these table? Has anyone come across this ? share your ideas..
3. Any precaution to be followed ?
4. Any possiblity to make this fields a navigational attribute of material so datasrc enhancement not required ?
Your inputs are very much valuable for my further steps...
thankyou!
Bala

Answer 1

Hello,
1. All Primary keys of a perticular table from where new field is coming should be available in your datasource.
Steps:
Enhancing datasource:
1. Goto rsa6 & choose datasource(2lis_03_bf) click on append structure,
2. Give perticular name and assign required fields,
3. Activate.
User exit:
1. Goto T Code : CMOD, provide perticular project.
2. choose exit : EXIT_SAPLRSAP_001(for transactional data)
3. double click on it you can see include, go inside by double clicking on it.
Sample coding:
1. Extending Business Content - EXIT_SAPLRSAP_001
data: l_s_icctrcst like icctrcst,
l_s_icctract like icctract,
l_s_icctrsta like icctrsta,
l_tabix like sy-tabix.
case i_isource.
when '0CO_OM_CCA_1'.
loop at c_t_data into l_s_icctrcst.
l_tabix = sy-tabix.
select single * from z0001 where kokrs = l_s_icctrcst-kokrs
and kostl = l_s_icctrcst-kostl.
if sy-subrc = 0.
l_s_icctrcst-zfield1 = z0001-zfield1.
l_s_icctrcst-zfield2 = z0001-zfield2.
modify c_t_data from l_s_icctrcst index l_tabix.
endif.
endloop.
endcase.
Hope it Helps
Regards,