SAP Message S1424 - Parameter type & unknown

Diagnosis
During the parameter dialog the system detected a parameter identifierwhich is not known. This may occur if the action description tableSDBAC was changed inaccurately.

System Response
The specific parameter type will not be handled. The rest of the dialogwill be normally processed.

Procedure
If you changed the table SDBAC by yourself you should carefully checkthese changes - otherwise you should contact SAP.