SAP CRM / CS Supports

Symptom
When executing an infopackage in system BWD(BI 7) to load CRM Case data
using datasource 0CRM_CASE_ATTR or 0CSM_CASE_LINKS, you get a short dump ‘OBJECTS_OBJREF_NOT_ASSIGNED’ in the CRM system. The short dump happens in function module CRM_BW_CMG_ATTR_INIT:
* Get parent case
TRY.
lr_case_cl ?= lref_case.
>>>>> lr_poid = lr_case_cl->if_scmg_case_api~g_case_poid.

If you test the same datasources in CRM using RSA3, correct data can be returned.
Reason and Prerequisites
Authorization problem.
Solution
Please assign the roles SAP_BC_CM_ADMINISTRATOR and SAP_BC_CM_USER to the RFC user used to extract the data from the CRM system.