Getting error when generating Access token for V3

Developer API
1

from future import absolute_import
import upstox_client
from upstox_client.rest import ApiException
from upstox_client.models import IndieUserTokenRequest
import os

CLIENT_ID = “XXXXXXXXXXXXXXXXXXXXXXX”
CLIENT_SECRET = “XXXXXX”

configuration = upstox_client.Configuration()
api_client = upstox_client.ApiClient(configuration)
login_api = upstox_client.LoginApi(api_client)

indie_user_token_request_body = IndieUserTokenRequest(
client_secret=CLIENT_SECRET
)

try:

v3_token_response = login_api.init_token_request_for_indie_user(
    body=indie_user_token_request_body,
    client_id=CLIENT_ID, 
)
print("V3 Token Generation Initiated Successfully!")
print(f"Response: {v3_token_response}")

except ApiException as e:
print(f"Exception when calling LoginApi->init_token_request_for_indie_user: {e}\n")
print(f"Error details: {e.body}“)
print(f"Status code: {e.status}”)

using the above code getting below error

HTTP response headers: HTTPHeaderDict({‘Date’: ‘Sun, 27 Jul 2025 11:40:05 GMT’, ‘Content-Type’: ‘application/json’, ‘Transfer-Encoding’: ‘chunked’, ‘Connection’: ‘keep-alive’, ‘reqid’: ‘300ecf85-a3ee-48bf-970e-5c35278cd834’, ‘vary’: ‘Origin, Access-Control-Request-Method, Access-Control-Request-Headers’, ‘message’: ‘request failed’, ‘requestid’: ‘b269bce6-9eed-488a-ae60-dd8cb6a76de5’, ‘x-content-type-options’: ‘nosniff’, ‘x-xss-protection’: ‘0’, ‘Cache-Control’: ‘no-cache, no-store, max-age=0, must-revalidate’, ‘pragma’: ‘no-cache’, ‘expires’: ‘0’, ‘strict-transport-security’: ‘max-age=0; includeSubDomains’, ‘x-frame-options’: ‘DENY’, ‘cf-cache-status’: ‘DYNAMIC’, ‘Set-Cookie’: ‘__cf_bm=MDWU1a0pOkkf2VOcB7jeEcnYVx1LANRVyYEq6PmIXHc-1753616405-1.0.1.1-WgW6CitnTCvLddZsprbj52ZnVTnxUouQBycpuuQwuZ8UwOdk.hwJdnFqBIBXCWf0; path=/; expires=Sun, 27-Jul-25 12:10:05 GMT; domain=.upstox.com; HttpOnly; Secure; SameSite=None, _cfuvid=PAea4xm3XDboncGjxEGmHHyTDDUmIytel4u39UODn.Q-1753616405221-0.0.1.1-604800000; path=/; domain=.upstox.com; HttpOnly; Secure; SameSite=None’, ‘Server’: ‘cloudflare’, ‘CF-RAY’: ‘965bdc247e410522-BOM’, ‘alt-svc’: ‘h3=“:443”; ma=86400’})
HTTP response body: b’{“status”:“error”,“errors”:[{“errorCode”:“UDAPI1123”,“message”:“Invalid notifier url”,“propertyPath”:null,“invalidValue”:null,“error_code”:“UDAPI1123”,“property_path”:null,“invalid_value”:null}]}’

Error details: b’{“status”:“error”,“errors”:[{“errorCode”:“UDAPI1123”,“message”:“Invalid notifier url”,“propertyPath”:null,“invalidValue”:null,“error_code”:“UDAPI1123”,“property_path”:null,“invalid_value”:null}]}’
Status code: 400

@Ketan @Ketan_Gupta

2

As the error message suggests, the notifier URL you have configured in My Apps is invalid.
For more information regarding the v3 authorization process, please refer to the Access Token Request documentation.

If you believe the notifier URL is correct, please share it with us. It’s possible that our server might be blocking requests to your notifier URL.

Thanks!