User is getting an error when trying to edit some time entries.
It seems that the time entry was set to auto-approve, but security permissions (Allow edit approved entry) did not grant rights to edit the approved entries. Checking this security permission allows you to edit approved time entries.
The Security Profiles screen enables you to create and customize security permissions for each user. BQE CORE comes with a standard set of security profiles to get you started. However, you can customize an existing security profile and save that as a new profile. You can allow a user to edit time entries after they have been approved. That should resolve the issue.