Enhancing the CRM datasource

Question

Hi experts,
i have to enhance the CRM datasource with some additional fields and fill them.
so far i am succesfull in doing the below.
1. i have appended the fields to the extractstructure and also regenerated the datasource
2. and when to the BADI for Messaging Flow for writing the code.
the problem here is its giving a small popup screen in which it has few implementations given by SAP in which do i need to put the code (i am assuming that its the same as our old exit concept where we use the same exit for all transaction datasoruces just by using the case statement) so in that four which one should i use for putting the code and what others are used for.
The below are the implementations available when i execute the badi for messaging flow.
CRM_BTX_EEW_BWA
CRM_BWA_ENHANCE_EX
CRM_BWA_ORDER_1
CRM_CSDR_BWA_MFLOW
If not a big trouble i will be greatfull if somebody can give me the code sample for getting a field filled from someother table with simple logic.
thanks and regards
sreedhar

Answer 1

Pls chk this link for Crm enhancement
Enhance standard data sources in CRM
BWA1 is for all standard crm datsource maintaince
rsa2 for generic datasource
BWA5 i think we use this Tcode after RSA5 activation additionally.
yes(incase of delta)
BWA7 do we have to use this tcode along with BWA1 for standard datasources also or else only for generic datasource.
irrespective of the type of dtasource,use it if you want to load delta(you need to delta enable the datasource here)
So we don't need to put the code as we traditionally do it for R/3 , if we just mapp the fields that would bring the data for these fields.
as i told in CRM we willwrite code in BADI in case you have done enhancement
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/biw/a-c/customer%20enhancements%20and%20userexits%20in%20bw%20-%20sap%20netweaver%20%20know-how%20network%20webinar.pdf
also chk this(credit goes to the writer)
CRm enhancement:
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.
Refer to the SAP Note 692195 for more info ......
send ur mailid, mail u some good step by step- doc abt this.
*pls assign points,if link is useful*
Regards
CSM Reddy