Hi Ranu,
You have implemented Document splitting Right . you are posting entry for two profit centersi.e. debit one profit center and credit another profit center. in that case check settings of Documnet splitting in
SPRO-FINANCIAL A/CING (NEW)-GENERAL LEDGER A/CING (NEW)-BUSINESS TRANSACTIONS-DOCUMNET SPLITTING
Check Zero balance a/c maintained or not?
Check Classify document type for documnet splitting for Documnet type you have entered is under which category? Normally paymnet documnet type is under payment category . if not change it your customisation or change documnet type of relevant in your posting.
Check GL accounts for document splitting for Bank GL and Vendor(Reconciliation GL) under cash or other GL -balance sheet or expenses
Sometimes it depends upon t-code also . change t-code to F-53 0r F-07
KRISHNA