Manage your vendors' documents and onboarding materials — upload vendor
documents such as W-9/W-8 tax forms, contracts, COIs, payment instructions,
and onboarding paperwork, then check bulk upload OCR and matching status.
Use when: 'upload a W9', 'attach a vendor contract', 'bulk upload supplier
docs', 'check vendor document status', 'upload a COI for a vendor'. Do NOT
use for card transaction receipts (use ramp-complete-expenses) or bill
invoice attachments (use ramp-manage-bills).
