Search Administration - Public Schema Types
Administrators can configure one or more schematypes for documents that do not require permission checks to be done by Enterprise Search.
Open the Enterprise Search Administration site
Select Public schematypes from the left side menu, under Configure
Click + Add schematype
Enter the name of the schema
Note: the name of the schema must correspond to a value of the schemaType field in your index
Save changes
IMPORTANT NOTE: Permission checks are not performed against public schematypes.