Why?In SAP CRM, transactions are linked to the Business Partner in assignment blocks. For instance, the opportunities for a certain customer are visible in the assignment block BP_BPBT/ACCOUNTOPPORTUNITIESOV .
As a standard, SAP CRM shows all opportunities that are linked to the business partner, regardless how old they are, or what status they have. For opportunities this is most of the time not much of a problem, since opportunities don’t come in big tranches (depends on what company you’re working for ;-)). However, for activities it can be very helpful to filter on certain parameters so only the relevant activities are shown.
To make this possible, SAP has introduced Configurable Data Retreival (CDR).