Jira Rest Api using Oauth 2 authentication returns 403

[Malcolm]

Hi,

We (Zoho Assist) are planned to integrate our product with Jira Cloud Platform. We chose OAuth 2 authentication model for using Jira Rest Api's. We are facing some issues in getting Jira Issue Details. 

Getting Refresh Token and stored in our instance is successfully completed.  

OAuth 2 Scopes:

write:jira-work read:jira-work read:jira-user offline_access

We are able to get access_token from stored refresh token using Token Url.

We can get available resource (cloud_id, name , scopes , avatarUrl) using access token  by below api

https://api.atlassian.com/oauth/token/accessible-resources

But we are facing issues while getting Jira Issue Details with same access token by below api.

https://api.atlassian.com/ex/jira/{cloudId}/rest/api/3/issue/{issueKey}

Always it returns 403.

It works while we tried to  get Jira Issue Details using Basic Authentication. So we are expecting that there may be issue in OAuth2 model or we may miss something. Help us to sort out this problem.

Note: It was working for long time. We are facing issues from last Thursday (Oct 12).

Check and let we know if we miss anything related to Oauth2.

[Deleted user]

You may need to generate a new Oauth2 token through the authentication endpoint

[Malcolm]

Hi, 

I have tried that too. But it doesn’t works. I think problem may be in between api.atlassian.com and Jira Instance (rest api).

Kindly try to get jira issue details for Jira instance using OAuth 2 and let me know how u achieved it.

It was working perfectly since last Thursday (Oct 12). So I guess this may be issue.