Element is a built-in part of the family definition and cannot be deleted or added to groups.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)

Syntax

C#
`public static FailureDefinitionId CannotDeletePredefinedFamilyElement { get; }`

Visual Basic
`Public Shared ReadOnly Property CannotDeletePredefinedFamilyElement As FailureDefinitionId Get`

Visual C++
`public: static property FailureDefinitionId^ CannotDeletePredefinedFamilyElement { FailureDefinitionId^ get (); }`

See Also