Onex is a comprehensive ERP solution and Spend Management is one of the key business function of the solution opted by various customers, across globe in the industries like BFSI, NBFC, Media House, NGO, Educational institution etc. The Onex Spend Management System framework encompasses multiple activities like PO process, Vendor Payments, Business Claims Reimbursements, Petty Cash Expenses, Travel Requests. etc. It is a collaborative work-flow based system, which ensures that all requests and approvals can be seamlessly executed on this web platform. Pre-set work-flow engine automatically takes requests to all required reviewers and approvers on the basis details entered while initialing a request and. The system comprises of a notification engine configured to send suitable email based notifications to the users, reviewers and approvers.