NPCI has introduced new measures for PSPs and acquiring banks to enhance UPI transaction efficiency, addressing recent issues.The guidelines focus on limiting API use, suggesting delays in certain operations to prevent transaction delays and failures.The retail payments body highlighted overutilization of check transaction status APIs as a key issue.Restrictions were placed on various APIs, like limiting balance enquiry requests and controlling the frequency of certain operations.These guidelines aim to bolster the UPI infrastructure by optimizing the use of key APIs and enhancing transaction reliability.The directive also specified peak UPI transaction hours, urging compliance by PSPs by July 31 to avoid penalties.Non-compliance may result in actions like UPI API restrictions, penalties, or suspension of new customer onboarding.The measures seek to smoothen UPI operations and reduce incidences of outages that disrupt digital payment services.By regulating API usage and transaction timings, NPCI aims to improve the overall efficiency and stability of the UPI ecosystem.Implementing these additional guidelines is crucial for PSPs to align with NPCI standards and ensure seamless UPI transactions.