One of your team member may already have created Surrogate Modules, and some modeling elements may already be linked to DOORS requirements. In that case you can request the analysis of the current DOORS Database to discover available Surrogate Modules:
This will perform a quick analysis of the database to retrieve the list of available Surrogate Modules within the scope defined by the checked treeList selection. If you confirm this list by closing the preference page with OK, an in-depth analysis will be performed on these modules to discover existing links with modeling elements.