Unified Payments Interface (UPI) - News & Updates
NPCI is phasing out the UPI collect request feature in order to curb online payment scams. Going forward only payments initiated by the payer (push transaction) will work not those initiated by the payee (pull transaction)
m.economictimes.com

NPCI looking to stop cons ‘pulling’ a fast one via UPI
NPCI plans to phase out ‘collect calls for merchant payments to curb UPI fraud. Authorities prefer ‘push transactions like QR code payments. Fraud cases in digital banking are rising, prompting stricter verification measures.