Dos and Don'ts Summary

Scenario	✅ Do	❌ Don't
Creating a New Transaction	Generate new ICTC & Agent Order Number. Store all details (including ICTC) locally before calling IC API.	Wait for IC API response before storing transaction data locally.
API/Network Failure / Timeout	Retry the transaction using the same original ICTC number and same original Agent Order Number.	Generate a new ICTC number or new Agent Order Number for the same transaction attempt.
Pre-fetching ICTCs	Implement robust internal tracking to ensure one-time use and proper management.	Reuse ICTCs for different transactions, or lose track of their usage status.
Reconciliation	Utilize both your internal system transaction records and IC reports for comprehensive reconciliation.	Rely solely on your internal system reports or API responses
Uncertain Transaction Status	Use the Get Transaction Status API with the original ICTC number to verify.	Blindly retry a transaction without first checking its status.
Transaction Cancellation	Ensure original transaction is cancelled in IC system before re-issuing/re-attempting.	Cancel in your internal system only, then re-issue without IC system cancellation/status check.