Project activity action (UPDM - MODAF aliases)
Creation
To create a Project Activity Action:
• From a Project Activity: right-click the Project Activity, point to New, point to MODAF, and then click Project Activity Action.
On the Select Type dialog, create or select the Project Activity that is invoked by the Project Activity Action.
• From an AcV-2 Project Activity Hierarchy: click the 
Composite Association button, click the calling Project Activity, and then click the called Project Activity.
Composite Association button, click the calling Project Activity, and then click the called Project Activity.• From an AcV-2 Project Activity Model:
◦ Click the Project Activity Action button, and then click in free space on the diagram. On the Select Type dialog, create or select the Project Activity that is invoked by the Project Activity Action.
Project Activity Action button, and then click in free space on the diagram. On the Select Type dialog, create or select the Project Activity that is invoked by the Project Activity Action.◦ From an appropriate Modeler pane, locate the Project Activity element that will be invoked by the Project Activity Action, and then drag that element to free space on the diagram.
On the Items tab of a Project Activity Action element's property pages, you can view and navigate to the Project Activity that is invoked by the Project Activity Action through the Linked Item association.
Input Pins and Output Pins
A Project Activity Action can own Project Input Pin and Project Output Pin elements.
On creation of a Project Activity Action, Modeler creates a Project Input Pin or Project Output Pin to represent each Project Parameter of the Project Activity that is used as the type of the Project Activity Action.
Note that after creating a Project Activity Action, Project Input Pin and Project Output Pin elements are not automatically created for new Project Parameter elements that are created on the associated Project Activity.
Appearance
When shown on an AcV-2 Project Activity Hierarchy, a Project Activity Action appears as follows:
When shown on an AcV-2 Project Activity Model, a Project Activity Action appears as follows:
Relationships
The following relationships are of importance to a Project Activity Action:
• Activity Part Of Project relationships can be created by adding a Project Activity Action to a Project Partition.
The following sections provide information about how a Project Activity Action is used in the model.
Create a Project Activity Actionfrom
Create from a Project Activity Action
In addition to the UPDM elements that can be created from all UPDM elements (Alias, Definition, Information and Metadata):
Shown on these diagrams, tables and matrices
In addition to the AV-2 Integrated Dictionaryand TV-1 Standards Profile, which can show all UPDM elements:
UPDM writeable properties
The following writeable properties are available on the Project Activity Action tab of a Project Activity Action element's Property Pages:
• URI