There are two ways to create a SCA diagram:
To create an SCA diagram from scratch:
Right-click the project and select New > Other.
In the New wizard, select SCA Composite Diagram in the SCA Tools folder and click Next. If you don't have the SCA Tools folder, it is in the Other folder.
The newly created file opens automatically in SCA Composite Designer. To open the Properties view, right-click the diagram and select Show Properties View.
To create an SCA diagram from an existing SCA Composite Model:
Right-click an existing SCA Composite Model and select Initialize SCA Composite Diagram file.
In the Initialize new Sca diagram file wizard, select your directory and the file name and click Finish.
Note: In accordance with the SCA specification, the default name is the composite name.
Type a unique name for the diagram in the File name field and click Next.
The diagram opens in the SCA Composite Designer. To open the Properties view, right-click the diagram and select Show Properties View.