This application link does not support impersonation ?

[support@skyguard.com.cn]

help me !  my service desk can not link to confluence kb space , what happend ?  see bellow screenshot ,

This application link does not support impersonation, by default all requests will be made as an anonymous user. For more information see Application Link.

[Brant Schroeder · Accepted solution]

When I have seen this error in the past, it tends to be that the user account does not have permissions to list all the spaces in Confluence.   Depending on how your application link is configured will determine how to check which user account is in question here.

If you're using OAuth with Impersonation:
Then the username/password between Jira and Confluence will be the same and in that case you just need to make sure that your account has permissions in Confluence to list all the spaces there. 

But if you're using just OAuth for the application link:
Then you don't necessarily have to use the same username in Jira as you use in Confluence to link these.  That makes it a but more difficult to be sure of the user account in question here, but the problem is likely the same.

[support@skyguard.com.cn]

Think you very much , I change OAuth to OAuth (impersionation ) ,then problem goes away.