Ordering activities shall establish the BPA with the schedule contractor(s) that can provide the supply or service that represents the best value. The following terms and conditions apply to all PCC purchases in addition to any terms set forth on the face of an.Combined Single Limit (CSL). The parties agree to amend the abovereferenced contract as follows: 1. Background and Purpose. To create a new Blanket PO from scratch, click the Documents drop-down menu in the Navigation bar, hover the mouse over POs, and select New.