Hi Ganesh
Do not create multiple house banks. You ac assign multiple accounts ID to a house bank.
Define your house bank in t code F112.
Save your data.
In left pane double click Bank account folder >>> click new >> Account ID >>> description >>> Bank account number >>> GL account number for the bank account.
Save
Go back (F3) repeat for second bank account as above.
Note: A house bank can have more than on Account ID (Bank account).
For every bank account, there will be a GL account.
Account ID is a unique ID.
In FBZP, in bank determination >>> Select company code >>> in left pane double click bank account >>> Enter Account ID & account number to be used in APP.
Regards
Nakul