Could not find or is not authorized for the process identified by alias &1 in an external link (session surrogate: &2).
&1 - The alias specified in the external link
&2 - The session ID
An external link has attempted to activate a site element specified by the alias. However, this alias was not useable. This means the an error page was shown to the user, who could not access the site with the specified link.
Check the previous messages in the message log to see if further diagnostic information about the error is available.
Check whether the alias is meant to be used.