Issue does not exist or you do not have permission to see it when using REST API

[Annie Zheng]

Hi, I tried fetching the an issue by calling REST API but got error "Issue does not exist or you do not have permission to see it",  my HTTP GET link is  :https://spttech.atlassian.net/rest/api/2/issue/GDS-1975

where "GDS-1975" is the issue key,  the issue definitely exists, what can be possibly wrong ?

[Niclas Sandstroem]

You don't have permission with that session.

Make sure you login before if using a browser. Else follow tutorial. https://developer.atlassian.com/jiradev/jira-apis/jira-rest-apis/jira-rest-api-tutorials/jira-rest-api-version-2-tutorial

[Annie Zheng]

I did log in, but still got the error. 

[Niclas Sandstroem]

The syntax is correct. Either you are not allowed to see it or it doesn't exist. This assuming REST API is turned on.

Example, 

https://jira.atlassian.com/rest/api/2/issue/JSW-6541