Need some info regarding BWA1 transaction in CRM

Question

Hi,
  I am trying to understand few things for the BWA1 transaction. Looks like we need to explore the BWA1 transaction for data source enhancement before trying the classical Data source enhancement method (Append structure in the Data source ) in RSA6.
1> The Data source fields visible in transaction RSA6 is stored in TABLE ROOSFIELD.
2> In BWA1 transaction the visible field (in the 'extract structure’ tab in the Field 'selection <> 'A' ) matches with the Data source fields in RSA6
   However the entry in the 'Mapping' tabs in Transaction BWA1 is stored in table SMOXRELP.
3> All the fields from the “Extraction Structure’ TAB rightly belong to the extraction structure maintained in the ‘Metadata’ tab.
After that I seem to loose my way.
For example take the example of data source 0CRM_SALES_ORDER_I, the above two assumptions are correct.
But when I look at the extraction structure (CRMT_BW_SALES_ORDER_I) AND the segments in the Mapping tabs (ORDERADM_H, ORDERADM_I etc)
I don’t seem to relate them, I know there these comes from the BDOC BUS_TRANSACTION_MESSAGE (as mentioned in the ‘Metadata’ Tab in BWA1) but don’t really understand the correlation.
Also please note that I am not able to change the value for ‘Selection’ field in the ‘Extract Structure’ tab.  I that case, how can I really enable some field which are by default hidden from the BW data source? Also how can I extend the whole thing to take into some custom fields as well that I have created for the Sales Transaction as well.
Thanks
AGN

Answer 1

hi Arun,
take a look oss note 692195, steps if you add new fields.
try to read bw350 course material, there is one chapter talk crm extraction, explain bw adapter, bdoc, etc.
and perhaps check bi best practice
http://help.sap.com/bp_biv235/BI_EN/index.htm
->customer relationship management
692195 - FAQ: Sales Analytics and CRM-BW data Extraction
Question 4: How can I extract the fields, which are not provided in the standard  data source extraction .
Suggestion 4: Follow the steps mentioned below.
1. Enhance Extract Structure with the required fields. (Create & include
   an append structure to the extract structure via transaction RSA6).
2.a) Release the fields of the append  for usage. (  To do this, double
   click on the Datasource and remove the flags in the column 'Hide
   Field' for all fields of Append. )
2.b)If the new fields cannot be seen in the extract structure of
    the transaction BWA1 then change and save the datasource, and then
    activate it in RSA6.
3. Define your mappings in BADI (CRM_BWA_MFLOW) to fill these fields.
Goto SPRO .
Follow the path ->
SAP Implementation guide ->Implementation with other mySAP components ->
Data transfer to the Business Information Warehouse->
Settings for the application specific datasources (CRM)->
Settings for BW adapter->
Badi :BW adapter :Enhancement of datasources in messaging flow.
4. Replicate the new Datasource to BW.
5. Expand the Communication Structure in BW.
6. Maintain transfer Rules for the new Datasource.
7. Activate the trasfer rules and perform the upload.