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

tovvenki · ‎07-09-2015

Hi,

Are you able to generate the token, I am also stuck on this and not able to make it work.

I am trying using the demo instances.

Thanks and regards,

Venki

venkata_koya · ‎08-28-2015

Assuming, you followed http://wiki.servicenow.com/index.php?title=Generating_OAuth_Tokens#gsc.tab=0

this should be working.

Mostly people encounter errors due to confusion of setting proper request parameters and making request with content type as application/x-www-form-urlencoded

Request parameters are actually form data you send with request

allwyn1 · ‎09-03-2015

Hi,

I have the exact same issue with Json response coming in as {"error":"server_error","error_description":"access_denied"}

'https://dev13384.service-now.com/oauth_token.do?grant_type=password&client_id=xxxxx&client_secret=xx...' , I am not getting the official response back from servicenow?? I am stuck at this issue for 3 days or so.

If you could help me that will be great.

Thanks

Allwyn

venkata_koya · ‎09-03-2015

The request to oauth_token endpoint needs to be form post not a get and parameters you are passing need to be form values and not query parameters.

I used chrome extension "advanced rest client" and here is screen shot