You have specified that sloped pipe be drawn, but are trying to connect to an element that doesn't support sloping connections.

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

Syntax

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

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

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

See Also