When an attribute is set to 'Required' in the BMIDE the List of Values (LOV) description is not populated to the attached attribute.
Configuration:
In the BMIDE create two attributes:

Attach a Classic LOV to the first attribute.

Attach the LOV Description to the second attribute.

Set the Attribute with the LOV to 'Required'.

Create an attribute mapping for the two attributes - not necessary for 'Required' properties, but shown here to demonstrate the issue.

In SEEC:
- Create a new Solid Edge Part.
- Save.
- Notice in the Common Properties Dialog that the LOV description is not populated to the attached attribute.

Solution
Make the property attached to the Description value also 'Required' - in the example only the property attached to the LOV had been made 'Required').
Background: Both LOVs exist in the same xml for 'Required' properties.
Hardware/Software Configuration
Platform: INTEL
OS: windows
OS Version: n/a
Product: SOLID_EDGE
Application: DOC_MANAGEMENT
Version: V219MP11
Function: SEEC
Ref: 002-8171535