{
  "payment_type": "venue_deposit",
  "ledger_entry_type": "venue_deposit_apply",
  "authorization": "Confirm the booking date, authorized organizer, and deposit amount against the accepted venue agreement.",
  "amounts": "Positive integer strings in USD cents, resolved server-side from approved records.",
  "identity": "Authenticate the payer and resolve the Ledger and business record server-side.",
  "idempotency": "Persist one stable key and exact payload per operation. Recover existing operations after timeouts.",
  "concurrency": "Serialize application approvals per record; the apply entry condition prevents a negative available balance.",
  "settlement": "Verify Payment status on the server. Never post native settlement entries manually.",
  "domain_rules": {
    "Date changes": "Authorize the booking revision before associating existing funds with another event.",
    "Added services": "Approve catering, equipment, or staffing charges before collecting an additional Payment.",
    "Cancellation decision": "Keep cancellation eligibility and any amount still due in the booking system."
  }
}