Diagnosis
Buffering authorization is entered for the table you processed althoughit is a cluster table. Tables which are to be buffered must, however,betransparent transparent tables or pooled tables.
Probably this error occurred when the table type of a pooled table ortransparent table was changed.

Procedure
Cancel the buffering type in the technical settings and the bufferingauthorization in the table settings. Select Goto -> Technicalsetting. Remove the entry in the buffering type field in the nextscreen.
In order to cancel the buffering authorization, you must change thetable type to transparent and cancel the permission to buffer in thescreen Table/Structure: Change Attributes. Change the table typeback to cluster and try again to activate the table.