Required versus Optional Dependents
In Windchill Workgroup Manager, explicit meaning is assigned to the two types of dependent relationships, required and optional. Required has two meanings:
• The dependent is required to completely define the set of interrelationships between objects in Windchill.
• The dependent is necessary for successful retrieval of the object in NX.
Optional means that the dependent is not necessary for successful retrieval of the object in NX. For example, a suppressed component is optional in an assembly (in general, the only optional members of an assembly are suppressed components). However, if the component is resumed, it becomes a required dependent.
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Whether a dependent is required or optional can depend on the configuration retrieved from Windchill. Also be aware that you are not prevented from removing a required assembly member from the list of objects being retrieved; however, removing a required member may require your intervention in NX to complete retrieval.
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In the case when NX provides you a choice whether to retrieve related objects, these are optional dependents.