The Indian Oil Corporation Limited revised its Cash Management System in 2006-2007. Previously, cash transactions over Rs. 500,000 were communicated to IOCL headquarters in advance for budgeting purposes, while smaller transactions were not. The new system implemented an electronic collection mode using tools like RTGS, NEFT, and internet banking to improve efficiency. It also involved forecasting cash flows monthly and rolling forecasts to aid planning and optimal resource allocation. Key elements included collecting data from regions and analyzing past trends to project future collections and needs.