OAuth Access Token Request

tjrigario · ‎04-28-2015

Hello,

I believe that there is an error either in the product documentation or the OAuth implementation. Upon requesting an access token with valid credentials, I consistently receive a 401 Unauthorized message.

JSON Response: {"error":"server_error","error_description":"access_denied"}

I've been unsuccessful at making the OAuth implementation work at all. Using the classic Authorization header method works just fine.

Chris

mayank3103 · ‎06-09-2017

Replying to this post a bit late, so joining the party when this might be resolved. But might be helpful for others

I was also having a similar issue.

JSON Response: {"error":"server_error","error_description":"access_denied"}

Steps taken:

1) Make sure Authorization is "No Auth"

2) Make sure the Body is x-www-form-encoded

curl -X POST \

https:///instance.service-now.com/oauth_token.do \

-H 'cache-control: no-cache' \

-H 'content-type: application/x-www-form-urlencoded' \

-H 'postman-token: 53f8a8f7-f286-607f-1e7e-8dab629081fb' \

-d 'grant_type=password&client_id=ac0dd3408c1031006907010c2cc6ef6d&client_secret=bv4gg7o7akbc18jjy13m&username=admin&password=admin'

3) As a result you would see the Request Headers automatically pulled up as

Now use the access_token in subsequent requests. Adding the header as Authorization: Bearer <access_token>

curl -X GET \

'https:///instance.service-now.com/api/now/table/sys_user?sysparm_display_value=true&sysparm_fields=n...' \

-H 'authorization: Bearer Icru5EyU4ZrgngoB0ecHp_LcXJHm-nB1NBt2QXaEXhYoPZcd6ss6KS4mLGfApGDDsi6ka86zdabHMgKX8doeHA' \

-H 'cache-control: no-cache' \

-H 'postman-token: e2073e4f-d09e-f19b-b510-5779f9ba415a' \

View solution in original post

allwyn1 · ‎09-03-2015

Thanks Venkat for the reply: I do have the Advance chrome extension as well. As soon as I put in this url I get the same error message again. When I tried using plsql also I got same error message. Let me know if you want to do an webex session or send me your contact I will reach out to you.

Allwyn

venkata_koya · ‎09-03-2015

Looking at snapshot, you are making request to oauth endpoint in browser window. It makes a http GET request to endpoint. You are supposed to do POST request to oauth endpoint.

You need to open advanced rest client chrome extension and fill out details as shown in my screen shot.

allwyn1 · ‎09-03-2015

Sorry I did open Advance rest api and did an POST as mentioned as access denied error message

venkata_koya · ‎09-03-2015

Funny, you did same mistake as i did.

You added the parameters as headers not as post body.

allwyn1 · ‎09-03-2015

Sorry What do I need to do to resolve this? Thanks again for your prompt reply

Allwyn