Diagnosis
In Customizing, you have already specified whether it is necessary toenter the personnel or group number for the time ticket type.Therefore, only certain screen types can be assigned to the time tickettype.

Example
You are required to enter the personnel number for the premium timeticket (time ticket type '01') in the standard system. Consequently,you can only use the list (screen type '1') and the list for severalpersons (screen type '2') for this ticket type.
The screen types '3' and '4' (lists for several groups or lists forseveral persons and groups) cannot be used since they require you toenter a group number.

Procedure
Select a valid screen type.