question Re: StandardOauth2AccessTokenProvider & InvokeHTTP - not working in Support Questions

StandardOauth2AccessTokenProvider & InvokeHTTP - not working

Taisia00 — Thu, 30 Oct 2025 08:53:11 GMT

I try get json from API with help InvokeHTTP.

In area Request OAuth2 Access Token Providers i used StandardOauth2AccessTokenProvider

08:52:01 UTC

ERROR

StandardOauth2AccessTokenProvider[id=2e9e7bd4-019a-1000-f83f-1ef5f5d2d56d] OAuth2 access token request failed [HTTP 400], response:
{"error":"unsupported_grant_type","error_description":"The authorization grant type is not supported by the authorization server.","hint":"Check that all required parameters have been provided","message":"The authorization grant type is not supported by the authorization server."}

Re: StandardOauth2AccessTokenProvider & InvokeHTTP - not working

Taisia00 — Thu, 30 Oct 2025 09:33:54 GMT

Направляем POST-запрос на адрес: https://iflat.io/api/v1/oauth/token
Тело POST-запроса (request body):

{

"username": "Ваш номер телефона",

"password": "Ваш пароль",

"account_id": 501,

"client_id": 2,

"client_secret": "wiOJc8yxgiSXDJvkYLkFcUgjtR7SrwPNiDdrt7Di",

"grant_type": "login"

}

Re: StandardOauth2AccessTokenProvider & InvokeHTTP - not working

VidyaSargur — Thu, 30 Oct 2025 10:47:06 GMT

@Taisia00, Welcome to our community! To help you get the best possible answer, I have tagged in our NiFi experts @MattWho @haridjh, who may be able to assist you further.

Please feel free to provide any additional information or details about your query, and we hope that you will find a satisfactory solution to your question.

Re: StandardOauth2AccessTokenProvider & InvokeHTTP - not working

haridjh — Thu, 30 Oct 2025 12:27:50 GMT

@Taisia00 The supported Auth-Grant types in StandardOauth2AccessTokenProvider are

User Password
Client Credentials
Refresh Token

Please update the grant-type option in the API request to the supported values .

Check the below doc for the valid properties/options and further information.
ref doc :
https://nifi.apache.org/docs/nifi-docs/components/org.apache.nifi/nifi-oauth2-provider-nar/1.28.0/org.apache.nifi.oauth2.StandardOauth2AccessTokenProvider/index.html

If the above suggestion helps in your requirements, please clink on "Accept as Solution" on this update.

Re: StandardOauth2AccessTokenProvider & InvokeHTTP - not working

VidyaSargur — Wed, 05 Nov 2025 05:05:48 GMT

@Taisia00, Did the response assist in resolving your query? If it did, kindly mark the relevant reply as the solution to aid others in finding the answer more easily in the future.