post
https://open-api.guesty.com/v1/expenses-api/expenses//cancel
Cancels an expense by its ID.
Sets the expense status to CANCELED, deletes all associated Journal Entries.
Supports cancellation of expenses in SCHEDULED, SUBMITTED, or INSUFFICIENT_FUNDS status. Rejects cancellation for PAID or already CANCELED expenses. Rejects cancellation when any associated Journal Entry is locked, reconciled, or disbursed.