SAP Note 26192 - Tableview control: Doubling fields

Symptom:

Error: If a table control is created with the Screen Painter and filled with fields, the entries for the participating fields in the field list are doubled during every generating step.
Message: Area exists several times

Cause and prerequisites

Error in the Screen Painter, only in FCS systems

Solution
Corrected in 3.0A. The table control is released officially in Release 3.0B. In the FCS System you should not use the TC.