Members,
I found the root cause of the error. I hope the following discussion helps others in similar situation in future. As per SAP Notes,
163543 - Performance problems when changing cost elements,
981674 - Performance with master data change: Including LEDNR,
746041 - Performance problems w/ Change/Delete of master data Part2
COSP and COSS data is read related to the cost element for the period in validity; In this case, SAP Standard Data from past years remained while the Org units were deleted; The cost element in scenario was same as that of the old data. This caused the problem and system generated dump;
Regards
Satya.