Patch 6678700: iSetup:R12: ORA-31095: cannot generate type : "SYSTEM.AZ_SELSETS_H" already exists

@/apps12g/applprod/apps/apps_st/appl/az/12

Hi All :
Customer is running into this error on script azhSelSetSchema.sql during the application of patch  6678700


sqlplus -s APPS/***** @/apps12g/applprod/apps/apps_st/appl/az/12.0.0/patch/115/sql/azhSelSetSchema.sql &systempwd
Connected.
declare
*
ERROR at line 1:
ORA-20101: Exception occurred in Selection Set Schema Registration procedure
:ORA-31095: cannot generate type : "SYSTEM.AZ_SELSETS_H" already exists
ORA-06512: at line 92




Time when worker failed: Mon May 21 2012 13:09:47


Time when worker started job: Mon May 21 2012 13:09:48


Start time for file is: Mon May 21 2012 13:09:48

sqlplus -s APPS/***** @/apps12g/applprod/apps/apps_st/appl/az/12.0.0/patch/115/sql/azhSelSetSchema.sql &systempwd
Connected.
declare
*
ERROR at line 1: