In a workflow, we are querying the usergroup.asmx web service to get the members of 3 separate SharePoint groups in the site collection. We use the same account to connect in each case. In two cases, it works without issue. In the other, it returns a (401) Unauthorized error, even though the connection tests correctly.
What permission does the account need? I assume this is group specific.
All groups allow Everyone to view membership, and membership is controlled by the Group Owner. Requests to join or leave are not allowed.
Any ideas would be most helpful.