Abstract
Abstract: In the realm of digital finance, the Unified Payments Interface (UPI), managed by the National Payments Corporation of India (NPCI), revolutionizes real-time, boundary less payments between bank accounts. However, Transaction Service Providers (TSPs) encounter challenges in NPCI's testing infrastructure. To resolve this, an independent National Financial Switch (NFS) Simulator for UPI is proposed. This simulator will empower TSPs to conduct autonomous UPI transaction testing, reducing reliance on external resources. By replicating UPI processes, it will facilitate early issue identification, expedite development, and strengthen security. The NFS Simulator's technical implementation involves Android and iOS app creation, NPCI's Common Library integration, and backend simulation, streamlining development and ensuring robustness in the dynamic digital finance landscape.
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