Script to use for REST API Call from one instance to another when using OAuth 2.0

[quiksilver]

Hi All,

I have a working script shown below that connects one service now instance from another via REST API.  It is running okay with using basic authentication, but when I try to use OAuth 2.0, that is where the issue is.  Can anyone point out my mistake please ?

I tried using this 

 sm.setAuthenticationProfile('oauth2', '1c79c7e12f8dd8108839d5ea2799b6c3'); 

where sysid "1c79c7e12f8dd8108839d5ea2799b6c3" is pointing to this

Thanks 

** here is the code I am running in background script

var requestBody;
var responseBody;
var status;
var sm;
try{
//May28REST is the name of my oubound REST message

//get_tickets is the name of http method under May28REST
sm = new sn_ws.RESTMessageV2("May28REST", "get_tickets");

sm.setBasicAuth("admin","admin");

//set auth profile to an OAuth 2.0 profile record.

// sm.setAuthenticationProfile('oauth2', '1c79c7e12f8dd8108839d5ea2799b6c3');

sm.setQueryParameter("sysparm_query","active=false^number=INCV0135986");
sm.setRequestHeader("Accept","Application/json");

response = sm.execute();
responseBody = response.haveError() ? response.getErrorMessage() : response.getBody();
status = response.getStatusCode();
} catch(ex) {
responseBody = ex.getMessage();
status = '500';
} finally {
requestBody = sm ? sm.getRequestBody():null;
}
gs.log('here here here : '+responseBody);

[Ankur Bawiskar]

Hi,

I have blog around this documented; that may help you

It mentions how OAuth can be configured

OAuth 2.0 with Inbound REST

For knowing how to consume the REST Message using OAuth refer below links

https://docs.servicenow.com/bundle/orlando-application-development/page/integrate/outbound-rest/concept/c_OAuth2ProfileTutorialGoogle.html

https://community.servicenow.com/community?id=community_question&sys_id=75f74f2ddb1cdbc01dcaf3231f961944

If my answer solved your issue, please mark my answer as ✅ Correct & 👍Helpful based on the Impact.

Regards
Ankur

[quiksilver]

Hello Ankur

THanks for your reply

When I run this code via background script

----------------

var oAuthClient = new sn_auth.GlideOAuthClient();

var params = {grant_type:"password", username:'uname', password:'pw'};

var json = new global.JSON();

var text = json.encode(params);

var tokenResponse = oAuthClient.requestToken('May28default_profile', text);

var token = tokenResponse.getToken();

gs.log("AccessToken:" + token.getAccessToken());

gs.log("AccessTokenExpiresIn:" + token.getExpiresIn());

gs.log(" RefreshToken:" + token.getRefreshToken());

I get this 

failed to find the oauth entity.
*** Script: AccessToken:null
*** Script: AccessTokenExpiresIn:0
*** Script: RefreshToken:null

I used this profile, is grant type correct? 

[Harsh Vardhan · Accepted solution]

it has generated token ? when you run the code in background script are you getting any error ?

kindly have a look on below blog ?

How to setup OAuth2 authentication for RESTMessageV2 integrations

[quiksilver]

Hello harshvardhan,

Do you know what should be the value of grant type 

This is my application registry that I use to connect to another snow instance

when I run this script 

var oAuthClient = new sn_auth.GlideOAuthClient();

var params = {grant_type:"password", username:'uname', password:'pw'};

var json = new global.JSON();

var text = json.encode(params);

var tokenResponse = oAuthClient.requestToken('May28default_profile', text);

var token = tokenResponse.getToken();

gs.log("AccessToken:" + token.getAccessToken());

gs.log("AccessTokenExpiresIn:" + token.getExpiresIn());

gs.log(" RefreshToken:" + token.getRefreshToken());

I get this 

failed to find the oauth entity.
*** Script: AccessToken:null
*** Script: AccessTokenExpiresIn:0
*** Script: RefreshToken:null