The name of each subsystem is unique and descriptive of the collective responsibilities of the subsystem  

The subsystem description accurately reflects the collective responsibilities of the subsystem  

The subsystem, through its interfaces, presents a single, logically consistent set of services  

The subsystem is the responsibility of a single individual or team  

The subsystem realizes at least one interface  

The interfaces realized by the subsystem are clearly identified and the dependencies are correctly documented  

The subsystem's dependencies on other model elements is restricted to interfaces and packages to which the subsystem has a compilation dependency  

The information needed to effectively use the subsystem is documented in the subsystem facade  

Other than the interfaces realized by the subsystem, the subsystem's contents are completely encapsulated  

Each operation on an interface realized by the subsystem is utilized in some collaboration  

Each operation on an interface realized by the subsystem is realized by a model element (or a collaboration of model elements) within the subsystem  

Subsystem partitioning done in a logically consistent way across the entire model  

The contents of the subsystem are fully encapsulated behind its interfaces