Advance Exchange - Xerox Visioneer Patriot 430Advance Exchange Warranty The Advance Exchange Warranty can be purchased for up to five years of continuous coverage for most DocuMate scanners. Advance Exchange Warranty customers receive priority phone support from senior level technicians for an unlimited number of incidents. If a scanner covered under the Advance Exchange Warranty is deemed defective by our technical support department, a replacement scanner will be shipped the same day for next