error" : "invalid_grant",errorCode" : "OAU-140", :Invalid Resource Owner Credentials

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question

Philip Noble asked Mar 26, '20 Phong Vu commented Apr 29, '22

error" : "invalid_grant",errorCode" : "OAU-140", :Invalid Resource Owner Credentials

When I try to ping the URL using httprequest Iam hitting with error

below is the URL:

"https://platform.devtest.ringcentral.com/restapi/oauth/token?grant_type=password&username=180244XXXXX&password=VeXXXXXX&extension=101"

Method : POST

Header Key:

"Authorization" : "Basic OC1qb09WRThUdktQbHppNHdVbjJfdzpHT1ozWE5nblJ1MlhxZUV4dnphUXp3NkwycFFwVGhSWEdPYmwwd2poVkF2dw=="

"Content-Type" : "application/x-www-form-urlencoded;charset=UTF-8"

Error :

400 Bad Request

{

"error" : "invalid_grant",

"errors" : [ {

"errorCode" : "OAU-140",

"message" : "Invalid resource owner credentials"

} ],

"error_description" : "Invalid resource owner credentials"

}

When I try give all above details in web API checker:

http://ringcentral.github.io/api-explorer/#!/Authentication/oauth_token_post

I am able to get the response.

Please let me know if am missing anything here.

authentication

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Answer 1 · 2020-03-26T04:14:04Z

Phong Vu answered Mar 26, '20

These params need to be in the post body, not the url

grant_type=password&username=180244XXXXX&password=VeXXXXXX&extension=101"

Something like this in Node JS.

var basic = process.env.RC_CLIENT_ID + ":" + process.env.RC_CLIENT_SECRET;
var headers = {
            'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
            'Accept': 'application/json',
            'Authorization': 'Basic ' + Buffer.from(basic).toString('base64')
            };
var body = querystring.stringify({
              'grant_type' : 'password',
              'username' : encodeURIComponent(process.env.RC_USERNAME),
              'password' : process.env.RC_PASSWORD
            });

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Answer 2 · 2020-03-26T18:11:03Z

Philip Noble answered Mar 26, '20

Thanks!!!

It Worked.

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Answer 3 · 2021-01-23T19:43:37Z

alan-kimelman-md8019 answered Jan 23, '21 Phong Vu commented Jan 24, '21

My curl failed, although it had worked previously:

curl https://platform.ringcentral.com/restapi/oauth/token -H "Accept: application/json" -H "Content-Type: application/x-www-form-urlencoded" -H "Authorization: Basic BasicNumberAsString" -d "grant_type=password&username=username&extension=101&password=password"
with the following error:

{

"error" : "invalid_grant",
"errors" : [ {
"errorCode" : "OAU-140",
"message" : "Invalid resource owner credentials"
} ],
"error_description" : "Invalid resource owner credentials"
}%

I attempted to resolve the error by changing my password, but to no avail. Any ideas on how to debug this problem?

1

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Phong Vu ♦♦ commented · Jan 24, 2021 at 05:38 AM

If you can login your account service web at https://service.ringcentral.com with exactly the same user credentials, then you should be able to log in with your code. Otherwise, the problem is described in the error message.

1 ·

Answer 4 · 2021-01-28T23:15:22Z

alan-kimelman-md8019 answered Jan 28, '21

The error resolved when I added "+1" to my ten digit phone number username.

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Answer 5 · 2021-02-23T15:01:50Z

Christopher Cyril answered Feb 23, '21

I had the same issue, change password from 64 characters to 16 characters then it worked.

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Answer 6 · 2022-04-29T13:36:28Z

Sam Amir answered Apr 29, '22 Phong Vu commented Apr 29, '22

@Phong Vu

Hello, I have same issue. All creadentials are correct. Could you please help me

1

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Phong Vu ♦♦ commented · Apr 29, 2022 at 02:35 PM

Hi Sam,

If you need help, create a new thread and provide some input and ask your question. There are many reasons why it fails. How can I help you when I don't know how exactly you call, what language you use and what is your account or app client id?

Help people to help you in the first place!

-1 ·

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