{
  "name": "VisaPaymentTransaction",
  "description": "Core structure of a Visa payment transaction across Visa Direct and other payment APIs",
  "fields": [
    {
      "name": "systemsTraceAuditNumber",
      "type": "string",
      "description": "Unique 6-digit trace number assigned by the merchant for each transaction",
      "required": true
    },
    {
      "name": "retrievalReferenceNumber",
      "type": "string",
      "description": "12-digit reference number used for transaction retrieval",
      "required": true
    },
    {
      "name": "localTransactionDateTime",
      "type": "string",
      "description": "Transaction date and time in local merchant timezone (ISO 8601)",
      "required": true
    },
    {
      "name": "amount",
      "type": "string",
      "description": "Transaction amount as decimal string",
      "required": true
    },
    {
      "name": "transactionCurrencyCode",
      "type": "string",
      "description": "ISO 4217 numeric currency code",
      "required": true
    },
    {
      "name": "acquiringBin",
      "type": "string",
      "description": "Bank Identification Number of the acquiring institution",
      "required": true
    },
    {
      "name": "acquirerCountryCode",
      "type": "string",
      "description": "ISO 3166-1 numeric country code of the acquiring institution",
      "required": true
    },
    {
      "name": "cardAcceptor",
      "type": "object",
      "description": "Information about the merchant or card acceptor",
      "required": true,
      "fields": [
        {
          "name": "name",
          "type": "string",
          "description": "Merchant name"
        },
        {
          "name": "idCode",
          "type": "string",
          "description": "Merchant ID code"
        },
        {
          "name": "terminalId",
          "type": "string",
          "description": "Terminal ID"
        },
        {
          "name": "address",
          "type": "object",
          "description": "Merchant address details"
        }
      ]
    },
    {
      "name": "primaryAccountNumber",
      "type": "string",
      "description": "Cardholder's Primary Account Number (PAN)",
      "required": false
    },
    {
      "name": "actionCode",
      "type": "string",
      "description": "Response code from the issuer (00 = approved)",
      "required": false
    },
    {
      "name": "approvalCode",
      "type": "string",
      "description": "Authorization approval code",
      "required": false
    },
    {
      "name": "transactionIdentifier",
      "type": "string",
      "description": "Unique VisaNet transaction identifier",
      "required": false
    },
    {
      "name": "businessApplicationId",
      "type": "string",
      "description": "Business application identifier (PP=person-to-person, AA=account-to-account)",
      "required": false
    }
  ]
}