The performance metrics selected must offer clear and demonstrable evidence of the success of each of the following aspects, even in areas where a metric is hard to quantify:
There should be at least one metric in each category above. The intention is to form the most comprehensive view possible of the performance of the supplier, the Postal Service, and any subcontractors involved. All purchase⁄SCM team members with contract management responsibilities are required to ensure that a formal feedback process is in place with suppliers that covers these key criteria.