The go-live gate
Owner and scope: one executive sponsor, one accountable process owner, named data and security owners, a bounded first release, success metrics, budget, timeline, exclusions, and go/no-go authority.
Process and data: current and target flows, normal and exception states, approvals, data dictionary, deduplication, units, opening balances, archive policy, reconciliation, integration contracts, and an authoritative source map.
People and operation: role-based training, support routes, cutover rehearsal, rollback criteria, monitoring, backups, exports, incident runbooks, vendor escalation, and a named post-launch product team.