-X PATCH 'https://api.rzp.<bank>.com/v1/upi/tpap/upi_number' \
-u [YOUR_KEY_ID]:[YOUR_SECRET] \
-H "Content-Type: application/json" \
-H "x-device-fingerprint: <device_fingerprint>" \
-H "x-device-fingerprint-timestamp: 1496918882000" \
-H "x-customer-reference: cust_ref" \
-d '{
  "upi_number": "1234567890",
  "vpa": "newuser@upi",
  "action": "change_vpa",
  "consent": true
}'

{
  "entity": "upi_number",
  "upi_transaction_id": "123qwert12",
  "upi_number": "1234567890",
  "type": "mobile",
  "status": "active",
  "vpa": "gaurav.kumar@exampleupi"
}

{
  "error": {
    "code": "BAD_REQUEST_ERROR",
    "description": "Consent is mandatory",
    "source": "internal",
    "step": "",
    "reason": "user consent must be true",
    "field": "consent",
    "metadata": null
  }
}