Attempting to run it through the Script Runner console, what could the issue be?
Both JIRA and Confluence are linked to each other with oAuth(not impersonated), and both have green light for connectivity.
com.atlassian.applinks.api.CredentialsRequiredException: You do not have an authorized access token for the remote resource. at com.atlassian.applinks.oauth.auth.ThreeLeggedOAuthRequestFactoryImpl.retrieveConsumerToken(ThreeLeggedOAuthRequestFactoryImpl.java:93) at com.atlassian.applinks.oauth.auth.ThreeLeggedOAuthRequestFactoryImpl.createRequest(ThreeLeggedOAuthRequestFactoryImpl.java:86) at com.atlassian.applinks.core.auth.ApplicationLinkRequestFactoryFactoryImpl$AbsoluteURLRequestFactory.createRequest(ApplicationLinkRequestFactoryFactoryImpl.java:180) at com.atlassian.applinks.api.ApplicationLinkRequestFactory$createRequest.call(Unknown Source) at Script3.run(Script3.groovy:64)
I believe if you want to do a certain type of request, you must have OAuth for both inward and outward connections for JIRA and Confluence.
I recently "demoed" a use case with both Confluence and JIRA and I could only get it to work with that configuration. I was making a request to create a page. Which really makes sense. If you do not impersonate a user how do you make sure that the user has rights to perform the action that you want him to?
I might be wrong, since I haven't been in this rodeo for that long, but in my opinion, you should try your luck with the mirror OAuth config.