As an administrator, you can create custom specialized object types. Users may use
these types to create objects in an app or in a spreadsheet to upload object data to the system.
When you create custom specialized types for objects that users import from a
spreadsheet, you must derive reference types from VPMReference or derive relationship
types from VPMInstance.
To enable users to update an attribute, you must set the attribute property
IPML.CustoUserAccess to Read-Write. If this property either does not exist or you do not
specify it as read/write, the system ignores the attribute when a user imports the
spreadsheet.
For more information, see Enterprise IP Schema Specialization User's Guide: Creating,
Editing, and Deleting Types.