The total cost to process repairs, refurbished, excess, obsolete, and end-of-life products, including diagnosing problems and replacing products. Includes the costs of logistics support, materials, centralized functions, troubleshooting service requests, on-site diagnosis and repair, external repair, and miscellaneous. These costs are broken into Returns Order Management, Returns Inventory Carrying, Returns Material Acquisition, Finance, Planning, IT, Disposal, and Warranty Costs.