"Shared Resource not used
This is an Resource rule - the rule will test each resource of the application
Sometimes when we work and evolve several times the same projects we probably change some components and another ones are not needed anymore. That usually happens when we change protocols or resources that can be kepts forever as part of the project even if they're not needed anymore. That work against the readability and maintenability of the project itself.
Remove the unused shared resources to increase the readability of the project
The rule is enabled by default. To disable it if unwanted, clone the default "BW6 Quality Profile" quality profile and then disable the rule.