Cisco recommends customers use the Cisco POWR tool to schedule a service RMA return. However, Cisco will continue to supply prepaid waybills for US Service returns as an alternative for sites without Web or printer access.lace the defective unit in the packaging of the replacement part or in a box that allows 5 cm's of space around the part and fill up this space with material that protects the unit against damages during transportation. Cisco prefers that you ship every defective unit in each own box if they are not assembled.