> ## Documentation Index
> Fetch the complete documentation index at: https://razorpay-881012b3.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# Generate OTP for Payment Source
> Generate OTP for payment source using the Razorpay TPAP Pro API.
Available in
🇮🇳 India
Use this endpoint to generate the OTP via the remitter bank while setting the UPI PIN.
```bash Curl theme={null}
curl -X POST 'api.rzp..com/v1/upi/tpap/fundsources/:id/otp' \
-u [YOUR_KEY_ID]:[YOUR_SECRET] \
-H "Content-type: application/json" \
-H "x-device-fingerprint: " \
-H "x-device-fingerprint-timestamp: 1496918882000" \
-H "x-customer-reference: customer-id-from-customer" \
-d '{
"vpa":"vpa@handle",
"card":{
"last6":"123456",
"expiry_month":"02",
"expiry_year":"26"
},
"upi_transaction_id":"123456",
"device":{
"geocode":"1234.1213",
"ip":"198.1.1.1"
}
}'
```
```json Response theme={null}
{
"entity":"upi.fundsource",
"id":"fs_1234",
"type":"savings",
"customer_name":"name",
"masked_account_number":"xx9987",
"ifsc":"IFSC001",
"upi_pin_set":true,
"upi_pin_length":4,
"otp_length":4,
"atm_pin_length":4,
"fundsource_provider":{
"name":"HDFC Bank",
"upi_iin":"600007",
"upi_enabled":false,
"mobile_registration_format":"format1",
"logo_url":""
},
"vpas":{
"entity":"collection",
"count":1,
"items":[
{
"mobile":"9999999999",
"address":"anc@handle",
"status":"active",
"primary":true
}
]
},
"upi_transaction_id":"123456"
}
```
## Query Parameters
The payment source identifier generated as a response from the Create VPA API.
## Request Parameters
The VPA linked to the payment source.
The card details.
The last 6 digits of the card, which the fund source provider will verify before setting the PIN.
The expiry month of the card in `MM` format.
The expiry year of the card in `YY` format.
The UPI transaction identifier. For example, `123456`.
The device details.
The IP address of the device.
The location coordinates of the device. For example, `12.9667,77.5667`.
## Response Parameters
Name of the entity. Here, it is `fundsource`.
Unique identifier of the entity.
Type of account.
Name of the account holder.
Masked account number of the customer.
IFSC of the bank.
UPI Issuer Identification Numbers (iin) of the payment source provider issued by NPCI.
Indicates whether the UPI PIN is set. Possible values:
* `true`: UPI PIN is set.
* `false`: UPI PIN is not set.
Length of the UPI PIN.
Length of the OTP.
Length of the ATM PIN.
Payment source provider details. Here, if the payment source is a bank, payment source providers will be bank information.
Name of the payment source.
UPI Issuer Identification Numbers (upi\_iin) of the payment source provider issued by NPCI.
Indicates whether the provider has UPI enabled. Possible values:
* `true`: UPI is enabled.
* `false`: UPI is not enabled.
Indicates the format as defined by NPCI - `format1`, `format2` and so on.
The URL of the bank logo.
Details of the VPAs linked to the payment source.
The entity type name. Here, it is `collection`.
Indicates the number of items in the entity type.
VPA details.
The mobile number of the VPA linked to the payment source.
The address of the VPA linked to the payment source.
The status of the VPA linked to the payment source.
Indicates if the VPA linked to the payment source marked as primary.
* `true`: VPA is linked to the payment source.
* `false`: VPA is not linked to the payment source.
Transaction ID of the outgoing request to gateway.