SAP Message Q8424 - Parameter type & unknown

Diagnosis
During the parameter dialog the system detected an unknown parameterID. This may occur if the action description table SDBAC was notchanged correctly.

System Response
The system will not process the specified parameter type. The rest ofthe dialog will be processed normally.

Procedure
If you made changes to table SDBAC yourself, carefully check thesechanges. Otherwise, contact SAP.