tokens: The process of an Office Supply Request starts when any employee of the organization submits an office supply request . Once the requirement is registered , the request is received by the immediate supervisor of the employee requesting the office supplies . The supervisor must approve or ask for a change , or reject the request . If the request is rejected the process will end . If the request is asked to make a change then it is returned to the petitioner / employee who can review the comments for the change request . If the request is approved it will go to the purchase department that will be in charge of making quotations ( using a subprocess ) and select a vendor . If the vendor is not valid in the system the purchase department will have to choose a different vendor . After a vendor is selected and confirmed , the system will generate and send a purchase order and wait for the product to be delivered and the invoice received . In any case the system will send a notification to let the user know what the result was . In any of the cases , approval , rejection or change required the system will send the user a notification .