AI Cost Attribution Evidence Anchors in 2026: How to Close Tenant Chargeback Disputes Without Re-running Allocation

TLDR Tenant AI chargeback disputes usually break at evidence continuity, not at formula selection. Open FOCUS work in 2026 shows live pressure on split-allocation guidance and actor attribution. A practical operating fix is a minimum evidence-anchor bundle required before Finance review. Six fields are usually enough to make a disputed row reproducible by a second reviewer. This method reduces replay loops because it converts arguments into binary evidence checks. Teams should separate attrib...