{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "TopupPurchaseRequest",
  "description": "Top-up purchase request.",
  "$id": "https://raw.githubusercontent.com/api-evangelist/zendit/refs/heads/main/json-schema/zendit-api-topup-purchase-request-schema.json",
  "type": "object",
  "properties": {
    "transactionId": {
      "type": "string",
      "description": "Client-provided idempotency key.",
      "example": "my-txn-abc123"
    },
    "offerId": {
      "type": "string",
      "description": "Offer to purchase.",
      "example": "offer-12345"
    },
    "subscriberNumber": {
      "type": "string",
      "description": "Recipient phone number in E.164 format.",
      "example": "+15555550100"
    },
    "sendValue": {
      "$ref": "#/components/schemas/Price"
    }
  },
  "required": [
    "offerId",
    "subscriberNumber"
  ]
}