ISO 10303-214:2010(E)
A Property_value_association is a mechanism to assign a Property_value_representation to an object.
Each Property_value_association is a Process_property_association or an Item_property_association.
The data associated with a Property_value_association are the following:
The describing_property_value specifies the value that is being assigned.
See property_value_association to property_value_representation for the application assertion.
The description specifies additional information about the Property_value_association.
See property_value_association to multi_language_string for the application assertion.
The description need not be specified for a particular Property_value_association.
If present, there shall be exactly one object that defines the description for a Property_value_association.
The validity_context specifies the context in which a Property_value_association is applicable.
EXAMPLE A Cost_property is applicable in the context of supplier A and may be different if the item is supplied by a different supplier B.
EXAMPLE Software can be used in different product classes, specified by the validity_context, with different parameter values.
See property_value_association to organization, property_value_association to product_class, and property_value_association to product_identification for the application assertions.The validity_context need not be specified for a particular Property_value_association.
If present, there shall be exactly one object that defines the validity_context for a Property_value_association.
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