Interaction Reference Checks

PowerDesigner provides default model checks to verify the validity of interaction references.

Check	Description and Correction
Missing referenced diagram	An interaction reference object must reference a sequence diagram object. Manual correction: Open the interaction reference property sheet and specify the sequence diagram to reference. Automatic correction: None
Attached lifelines consistency	The interaction reference symbol has a list of attached lifelines, which correspond to actors and objects. These actors and objects must match a subset of the ones displayed in the referenced sequence diagram. This corresponds to a subset because some lifelines in referenced diagram could not be displayed in the diagram of the interaction reference. The current check verifies the following consistency rules: The number of attached lifelines cannot be greater than the number of lifelines in the referenced diagram If one attached lifeline corresponds to an object, and if this object has an associated metaclass, then there must be at least one object in the referenced sequence diagram that is associated with the same metaclass Manual correction: Change the list of attached lifelines for the interaction reference object. This can be done simply by resizing the interaction reference symbol or by clicking with the pointer tool on the intersection of the interaction reference symbol and the lifeline. The tool cursor changes on this area and allows you to detach the interaction reference symbol from (or attach it to) the lifeline. Automatic correction: None
Too many input messages for reference	The interaction reference has more incoming than outgoing messages. Manual correction: Delete incoming messages or add outgoing messages, until the numbers are equal. Automatic correction: None
Too many output messages for reference	The interaction reference has more outgoing than incoming messages. Manual correction: Delete outgoing messages or add incoming messages, until the numbers are equal. Automatic correction: None