{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/ExpenseItemization",
  "title": "ExpenseItemization",
  "type": "object",
  "description": "An itemized line within a parent expense, representing a breakdown of the total amount.",
  "properties": {
    "itemizationId": {
      "type": "string",
      "description": "Unique identifier of the itemization",
      "example": "500123"
    },
    "expenseId": {
      "type": "string",
      "description": "The parent expense identifier",
      "example": "500123"
    },
    "transactionDate": {
      "type": "string",
      "format": "date",
      "description": "The date of the itemized charge",
      "example": "2026-01-15"
    },
    "transactionAmount": {
      "$ref": "#/components/schemas/Amount"
    },
    "expenseType": {
      "$ref": "#/components/schemas/ExpenseType"
    },
    "businessPurpose": {
      "type": "string",
      "description": "Purpose of this specific itemization",
      "example": "example_value"
    },
    "customData": {
      "type": "array",
      "items": {
        "$ref": "#/components/schemas/CustomData"
      },
      "example": []
    }
  }
}