This error can occur in the following cases:
- The input network dataset does not support turns.
- The output location for the turn feature class is a geodatabase. It must be a feature dataset in the geodatabase.
Do one of the following:
- If the ability to model turns was not been specified during network dataset creation, delete the existing network dataset and re-create it with the ability to model turns.
- If the wrong output location was used, provide a valid feature dataset in a geodatabase as the output location for the turn feature class.