Highlights Reversal on failed UPI transaction. Year end closing transaction failures. New Delhi: On April 1, the Financial Year end closing had led to some UPI and IMPS transaction failures at few banks. The National Payments Corporation of India in a tweet said that it had have observed that most of these bank systems are back to normal since the evening of April 1 while customers may avail uninterrupted IMPS and UPI services. The Financial year end closing had led to some UPI and IMPS transaction failures at few banks. We have observed that most of these bank systems are back to normal since last evening. Customers may avail uninterrupted IMPS and UPI services.