Correct/Changes in the data in DataSource in R/3 System

Question

Can we make the changes in the DataSource which is there in R/3 from were the data is loading into BW System?

Answer 1

Friend..here it is..
In the source system...Create an append structure to the std datasource's extract structure..then add fields in the append structure.The Z-fields can be named like 'ZZ<field-name>'.
(For the data-element,use same data element as that of the fields from where you will pick the data..so that format problems are avoided)
Save and activate the append structure and also the datasource extract structure.
Added z-fields are hidden by default.Now go to tcode rsa6 and find the std datasource.Click on change button and unhide the added z-fields..but do not remove the checkbox for 'fields known in customer exit'.
Now u will have to write user exit in tcode CMOD.
Go to CMOD and enter the project name for BW.
Then choose radio button components.
4 user exits will come up.Use 2nd one for master data attributes enhancements.
You will have to loop on C_T_DATA(or I_T_DATA) and modify it with derived values for the z-fields.
Save and activate exit.
Then do extract check in rsa3.See that z-fields getting derived OK.
In BW,try to find if BC infoobjects available for the required additional attributes.
Go to change mode in the std main infoobject and add the new attr at the end.
Then replicate datasource in BW,map the transfer and update rules and then load data.
Done.Hope I havent missed anything.
cheers,
Vishu
iF..You dont have an existing project and u have to create one.
Select a good name for a project..say ZBIW..and then enter the name and click on create button.It will take u to new screen.There give short text for project name.
Above u will see 'enhancement assignments' button.Click it and in the new screen add enhancement RSAP0001.
Save and remember to activate project too..
(save in appropriate transport request)
Then if u click the components button u will see the 4 user exits..
Choose the documentation radio button and u will get purpose of all 4 exits.