Products eligible for correction are either not fit for their particular purpose or have a defect that inhibits functionality. A product that needs to be corrected will be returned to the supplier, who is responsible for making all changes and repairs necessary to achieving the performance outlined in the awarded contract. When return for correction is required offsite or is covered by warranty, the supplier is responsible for all costs of transportation and for risk of loss in transit. When the cost of physical return makes it impracticable to return an item for correction, the contract should also provide that the Postal Service may correct, or require the supplier to correct, the item in its current physical location, at the supplier’s expense.