viewpoint-usage-types
Available in: SysML
This checks that viewpoint usages are only typed by a single viewpoint definition.
Subsumes requirement-usage-types.
Specification
While not formally described in chapter 8, it is given in chapter 7.26.3:
A viewpoint usage must be defined by a single viewpoint definition.
Example
part def P;
viewpoint def V1;
viewpoint def V2;
viewpoint v1 : P; // error: A viewpoint usage must be defined by a single viewpoint definition
viewpoint v2 : V1, V2; // error: A viewpoint usage must be defined by a single viewpoint definition
Fix this by removing specializations that directly or indirectly contribute to invalid types:
part def P;
viewpoint v1; // ok
or specialize only a single viewpoint definition:
viewpoint def V1;
viewpoint v2 : V1; // ok