Transaction Status API

Overview

The Transaction Status (Requery) API allows merchants to track the status of transactions processed via the NTT DATA Payment Services gateway. It supports server-to-server communication using the POST method, with encrypted requests and responses.

Data Flow

• Merchants send encrypted transaction details (MID, merchTxnID, amount, txnCurrency) to query the status.
• The API returns an encrypted response, which the merchant decrypts using the provided NDPS encryption logic.
• Encryption logic must be implemented at the merchant's end for both request and response handling.

Prerequisites

• API Keys and Credentials: Must be available prior to integration.
• MerchTxnID: Must be maintained from the transaction initiation.
• HTTPS: Must be enabled with TLS v1.2 or higher.
• Test Environment: A sandbox environment must be set up to verify webhook responses.
• Signature Generation: Use the sequence [merchID + merchTxnID + amount + txnCurrency] for encryption.

Possible Reconciliation Statuses

• RS: Reconciled Settled
• RNS: Reconciled Not Settled
• NRNS: Not Reconciled Not Settled
• PNRNS: Payment Not Reconciled Not Settled
• PNRS: Payment Not Reconciled Settled

Query Transaction Status

Retrieves the status of a transaction using encrypted transaction details.
The response is encrypted and requires decryption using NDPS logic.