Cause
the sum of PCTUSED and PCTFREE for a subpartition whose number (subpartitions are numbered starting with 1) is displayed in this message exceeds 100. Note that if PCTUSED and/or PCTFREE values for this subpartition were not specified explicitly, default values at partition-level would be used. If, in turn, default PCTUSED and/or PCTFREE values at partition-level were not specified, default values for the partitioned table or index would be used. If those values were also not specified explicitly, system defaults would be used.