{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/ChargingRequest",
  "title": "ChargingRequest",
  "type": "object",
  "required": [
    "accountId",
    "amount",
    "chargeType"
  ],
  "properties": {
    "accountId": {
      "type": "string",
      "description": "Account to charge"
    },
    "amount": {
      "$ref": "#/components/schemas/MonetaryAmount"
    },
    "chargeType": {
      "type": "string",
      "enum": [
        "PREPAID",
        "POSTPAID"
      ],
      "description": "Charging model"
    },
    "serviceType": {
      "type": "string"
    },
    "description": {
      "type": "string"
    },
    "externalReference": {
      "type": "string",
      "description": "External transaction reference"
    },
    "metadata": {
      "type": "object",
      "additionalProperties": {
        "type": "string"
      }
    }
  }
}