The Role "&1" - sgt. &2 can't be added to the Site Element "&3" - sgt. &4 as they belong to two different sites.
&1 - The name of the role
&2 - The unique identification of the role
&3 - The name of the site element
&4 - The unique identification of the site element
An attempt has been made to assign a role to a site element. This has failed as the role and the site element belongs to different sites.
The developer must ensure that only roles belonging to the current site is assigned to site elements from the site.