Collect Request Authorization (Accept or Decline)
Authorizes (accepts) or declines a pending collect request. When accepting, the encrypted UPI PIN block is required for payment authentication. Declining a collect request does not require a PIN. NPCI has deprecated collect-based UPI payments for Android devices effective February 28, 2026.
Request Body
application/json
Device and SIM information required for UPI API authentication and tracking
Transaction ID of the collect request
Action to take on the collect request
"APPROVE" | "DECLINE"Encrypted UPI PIN block (required only for APPROVE action)
Account to debit from (required only for APPROVE action)
Response Body
application/json
curl -X POST "https://sandbox-upi-api.m2pfintech.com/upi/v1/wrapper/transaction/collectAuth" \ -H "Content-Type: application/json" \ -d '{ "deviceInfo": { "deviceId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890", "simId": "8991101200003204510", "deviceType": "MOB", "os": "Android", "telecom": "Airtel", "geoCode": "13.0827,80.2707", "appId": "v2.0", "ipAddress": "192.168.1.50", "location": "Mumbai", "mobile": "919876501234" }, "channelCode": "HDFC0001234", "seqNo": "502", "txnId": "COLLECT-TXN-UUID-12345", "action": "APPROVE", "credBlock": "encrypted-upi-pin-block", "accountId": "acc-uuid-001" }'{
"status": "SUCCESS",
"exception": null,
"seqNo": "502",
"message": "Collect request approved",
"result": {
"txnId": "COLLECT-TXN-UUID-12345",
"rrn": "603012345679",
"txnStatus": "SUCCESS",
"amount": "500.00"
}
}Check Transaction Status Response POST
Fetches the result of a previously initiated transaction status check. Pass the callbackRef from checkTxnReq. Returns the definitive transaction status from NPCI including RRN, response code, amount, and timestamps.
Fetch Transaction by RRN POST
Fetches transaction details by Retrieval Reference Number (RRN). The RRN is a unique identifier assigned to each UPI transaction by NPCI. Useful for looking up specific transactions for support or reconciliation.