{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "ExpenseDetail",
  "type": "object",
  "description": "The full representation of an expense entry",
  "properties": {
    "expenseId": {
      "type": "string",
      "description": "Unique identifier of the expense"
    },
    "transactionDate": {
      "type": "string",
      "description": "The date the transaction occurred"
    },
    "businessPurpose": {
      "type": "string",
      "description": "Business justification, maximum 64 characters"
    },
    "allocationState": {
      "type": "string",
      "description": "The allocation status of this expense"
    },
    "isPersonalExpense": {
      "type": "boolean",
      "description": "Whether this is a non-reimbursable personal expense"
    },
    "isExpenseRejected": {
      "type": "boolean",
      "description": "Whether the expense has been rejected by an approver"
    },
    "isPaperReceiptReceived": {
      "type": "boolean",
      "description": "Whether a physical receipt has been received"
    },
    "hasExceptions": {
      "type": "boolean",
      "description": "Whether the expense has policy exceptions"
    },
    "invoiceId": {
      "type": "string",
      "description": "Reference to a supplier invoice"
    },
    "customData": {
      "type": "array"
    },
    "lastModifiedDate": {
      "type": "string",
      "description": "When the expense was last modified (ISO 8601)"
    },
    "links": {
      "type": "array",
      "description": "HATEOAS navigation links"
    }
  }
}