GET /api/v1/business/transactions to list transactions and GET /api/v1/business/transactions/:id for immutable status events and failure details.
Common states include pending, awaiting_funds, funded, processing, action_required, completed, and failed. Terminal transactions never regress.
Settlement details are available at GET /api/v1/business/transactions/:id/settlement. Confirm an external-wallet settlement with POST /api/v1/business/transactions/:id/settlement/confirm.