Issue in receiving OAuth token from Zendesk getting 401 error.

[AkashYen007]

Hi Team,

I'm new to OAuth 2.0. I'm currently working on configuring OAuth token with our external vendor who uses Zendesk tool and is provider for OAuth token. The did setup and using the provided client-id and client secrate and other details we did setup at our end also with the provided details in Application regiestroy and created one custom script based on OAuthUtil. Tried getting token it's reching the zendesk side but receiving HTTP error 401 - unauthorized error. Tried finding what is the issue here but not able to find it. Any help appriciated. 

Custom Util Script

//* Dont edit this script include. Best practise: Extend this script include and override the functions.

var OAuthCustomHandler = Class.create();

OAuthCustomHandler.prototype = {

    initialize: function(oauthContext) {

        this.oauthContext = oauthContext;

    },

    interceptRequestParameters: function(requestParamMap) {

        // Add/Modify request parameters if needed

        this.preprocessAccessToken(requestParamMap);

    },

    parseTokenResponse: function(accessTokenResponse) {

        this.postprocessAccessToken(accessTokenResponse);

    },

    preprocessAuthCode: function(requestParamMap) {},

    preprocessAccessToken: function(requestParamMap) {

        this.oauthContext.addHeader("Content-Type", "application/json");

        this.oauthContext.addHeader("Accept", "application/json");

    },

    postprocessAccessToken: function(accessTokenResponse) {

        var contentType = accessTokenResponse.getContentType();

        var contentBody = accessTokenResponse.getBody();

        gs.info("Content Type: " + contentType);

        gs.info("Content Body: " + contentBody);

        // if (contentType && contentType.indexOf('application/json') != -1) {

        var tokenResponse = (new global.JSON()).decode(accessTokenResponse.getBody());

        var paramMap = accessTokenResponse.getparameters();

        for (param in tokenResponse)

            paramMap.put(param, tokenResponse[param].toString());

        // }

    },

    type: 'OAuthCustomHandler'

};

Application registory setup:

When tried get token:

In the logs I'm getting this error.

Let me know if you require any more details.

Thanks in advance.

[Sujatha V M · Accepted solution]

@AkashYen007  401 indicates its authorization error.  

Non-admins will not be able to retrieve the details: 

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0783632

Create a Zendesk OAuth client : 

https://docs.servicenow.com/bundle/washingtondc-it-asset-management/page/product/software-asset-mana...

Also did you try to change the Send credentials as "In Request Body" and test it. If so what was the result?

I have come cross the same issue and I had to re-enter the client secret and it worked. 

Please mark this as helpful and accept it as a solution if this resolves your query.

Thanks,

Sujatha V.M.

[KevinBellardine · Accepted solution]

Hey @AkashYen007 

Can you look at this article and see if you've followed these steps?

https://docs.servicenow.com/bundle/washingtondc-it-asset-management/page/product/software-asset-mana...

[AkashYen007]

Hi @KevinBellardine ,

Tried this way also but same error I'm getting.

Thanks

[AkashYen007]

Thanks a lot for the help on this it helped to get token in our side