HI Gururaju,
Firstly you have to create Reconciliation A/c for Material & Service.
Then you have to change GL Master for both the Reconciliation A/c in Create/Bank/Interest tab by ticking the field "Reconciliation Acct. Ready for input".
Then you need to make a configuration setting in SPRO. Define alternative reconciliation account. The path is below.
SPRO->Financial Accounting->Accounts Receivable and Accounts Payable->Business Transactions->Postings with Alternative Reconciliation Account->Define Alternative Reconciliation Accounts
Exam:
Suppose, you have created Reconciliation A/c for Material 1000001 & Service 1000002.
Then you have to do setting in Define Alternative Reconciliation Accounts;
Chart of A/c: 1001
GL Account Alt GL A/c
1000001 1000002
1000002 1000001
I hope this is enough to understood.
Regards,
Pratik