How Many Documents Need to Be Certified? TaskRabbit Customer Support Updated 28 August 2019 23:20 A total of three (3) documents are needed for document certification. A full list of accepted documents is listed here. Related articles Why Is Document Certification Needed? How Can I Have My Documents Certified? Should I Scan or Take Photos of My Documents? Which Documents Are Accepted? What Do I Need to Be a Tasker?