4-4.8 Correction or Replacement Suppliers must be given an opportunity to correct or replace nonconforming products or services when it can be accomplished within the delivery schedule. If correction or replacement is feasible: There must be no additional cost to the Postal Service. The Postal Service reserves the right to charge the supplier the cost of reinspection and retesting needed because of a previous rejection (rates charged and other expenses are in accordance with Clause 2–23: Reimbursement — Postal Service Testing). When replacement or correction is not possible within the performance period and the purchase/SCM team has rejected performance, the contracting officer may provide the supplier an opportunity to provide acceptable substitute performance if the purchase/SCM team decides that: Performance is still desired, and Substitute performance will best mitigate the damage suffered by the Postal Service. When substitute performance is accepted, the contracting officer must modify the contract to provide for appropriate consideration.