Diagnosis
The view assignments in Customizing have not been defined or areincorrect.

Procedure
An object cannot be displayed or editedin the Workbench unless viewshave been assigned. Check that the view assignments in Customizing arecorrect for the delivered object type.
This error is often caused by the view assignments for newcustomer-specific recipe types. In Customizing, choose the recipe typeconcerned and check that the views are assigned. Define the assignmentif necessary. You can use the Customizing settings for the referencetype here.