PDM-UG: Known issues

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Material properties

Some application protocols such as AP214 use specific subtypes to specify material properties. These subtypes are currently not included in the PDM Schema.

Mapping of part properties in AP 214

The requirement to represent properties for parts is in AP214 always mapped onto an AIM structure that extends the property_definition tree with a general_property. In consequence, AP214-compliant implementations are forced to always instantiate general_property when part properties shall be represented. We feel that this is not adequate, since PDM systems in general do not have the capability to distinguish between properties related to parts and properties as a general characterization criteria independent from the actually present product data population.