Traceability and Lot Control. Enphase will maintain complete traceability by Product to all components and material incorporated into such Product, for both serialized and non-serialized materials and components. Enphase will maintain suitable records to correlate a specific Product lot or Product serial number to a specific material, component or sub-assembly, lot and serial number. All Product supplied to SunPower must be identified by a lot number and, if serialized, by serial number.