Dear Krishna
did you checked the SAP online help as shown in the link i have posted?
In context of. " any rule associated with this mass change ?" => answer is; Yes there is a rule. Check:
Sample Set of Rules for EH&S Easy Expert - EH&S Expert - SAP Library
In context of: "now still have error when calling secondary data determination " => which error is coming up?
In conetx of "Which file is it trying to excell from the expert server" here i am not sure what you are "missing" or trying to explain
C.B.