The Central Bank of India is also a Nationalized Bank of the Country. This one also provided Banking Services under RBI rules & guidelines. Like as all other banks this CBI Bank also stored the Customers Data under CIF Number get by Passbook a unique Customer Information File Number (CIF). Each Customer of the Bank has been assigned the CIF Number linked to their all accounts like loans, savings, deposits, demat, and all others. Customer File Number (CIF) is necessary to link all other accounts of the Customer of the Bank. CIF Number provides all details of the user to avail of various services and facilities.