How to set up ServiceNow instance as OAuth Client - Support and Troubleshooting

How to set up ServiceNow instance as OAuth Client Description This article explains how to set up the ServiceNow instance as OAuth Client with grant type 'Resource Owner Password Credentials' to provide access_token and refresh_token .

Access_token is used to access the resources on the instance.

Release or Environment Instructions Setting up ServiceNow instance as a OAuth Client:

1)System OAuth -> Application Registry -> New -> Create an OAuth API endpoint for external clients

2) Configure the OAuth Application Registry

a)Name - Provide a name

b)Default Grant type - Resource Owner Password Credentials

c) Client ID - Auto Generated

d)Client Secret - Auto Generated

e) Refresh Token Lifespan - Leave the default value ( 8,640,000 seconds=100days)

f)Access Token Lifespan - Leave the default value (1,800 seconds=30 minutes)

Save the record .

Obtaining the Access and Refresh Token from 3rd party client like POSTMAN:

From the POSTMAN Rest Client

1) Method = POST

2) URL = .service-now.com/oauth_token.do">https:// .service-now.com/oauth_token.do

3) Body -> x-www-form-url-encoded

Define the below KEY : VALUE pairs

grant_type:password

client_id:

client_secret:

username:

password:

4) Clicking on Send will return 'access_token' and 'refresh_token' from the instance

5) To get a new access_token using the refresh_token send the following body

Body -> x-www-form-url-encoded

Define the below KEY : VALUE pairs

grant_type:refresh_token

client_id:

client_secret:

refresh_token:

Access the resource on the instance using the access token:

From the POSTMAN Rest Client

1)Method=GET

2)URL= https:// /api/now/table/incident?sysparm_limit=1

3) Authorization=No Auth

4)Headers:

Authorization:Bearer

Additional Information