Urgent! - Problem during Conversion of SAP datadictionary table...

Hello All,

When using "Database utility" on a custom table we have encountered a hard error.

Request "Adjust" - Error in step 2 - see object log and analysis

The object log shows:

Begin step ZTABLE-STEP2:                          
sql:                                                       
RENAME "ZTABLE" TO "QCMZTABLE"              
ORA-26563: renaming this table is not allowed              
DDL time(___1): ........31 milliseconds                    
The SQL statement was not executed                         
Renaming of table ZTABLE to ZTABLE failed
Error in step ZTABLE-STEP2

Could any of you advice on what might be the problem is. Now the table could not be converted as it comes till the adjustment step and fails with ORA-26563