Legacy part files (pre NX8), have the attribute "Material" set to "Not Defined" (originates from our template parts).
This has worked fine for quite some time but, now in NX12 or higher version, when we open a legacy part file or add it as a component, we always get an information window with the statement:
"The Material Attribute was reset because it did not match the material assignment.
This action was taken based on your Customer Default setting."
Solution
The message highlights that the Material attribute in the part file being opened has a value set that is NOT related to a material assigned to a solid body and subsequently there are necessarily no physical properties defined for the solid body.
The attribute defined in NX Customer Defaults Gateway --> Materials/Mass, Attributes tab, Part Material group, Attribute Title Alias field, is an NX system attribute which is reserved to be used by NX to store the material name defined when using Assign Material function.
In earlier versions, there was no check or prevention to manually set this attribute. Now if a part file is opened with the "Material" attribute value set manually, the "Material" attribute WILL BE REMOVED.
To avoid such situations:
Notes
9959408