Hi Sabina,
The error is caused because the Component usage 'CUKNOWARTValueHelp" is missing. Open the associated BSP application and check if there is a component usage defined in the Runtime Repository. If there is no custom enhancement to the BSP you are dealing with, then this issue might be present in Standard. If that is the case, check if the note suggested by Hasan helps.
Good luck.
Regards,
Prathap