Diagnosis
Your key selection determines which of the possible keys should be usedto differentiate the entries.

System Response
Every key field marked as a required field (this is predefined in thesystem and cannot be changed) were automatically entered as key fieldsto be used. This message informs you of this fact.

Procedure
You can change the choice of keys at any time using Goto -> Keyselection. However, you cannot deselect required fields.
If you make subsequent changes to your key selection (in other wordshaving already maintained data for the keys) postprocessing may benecessary and the system displays a message to this effect.