HRMS RUP7 patch application failed with error

Issue APPLYING an E-Business patch via ADPATCH

FAILED: file perdor.odf   on worker 15

The table is missing the index HR_DOCUMENT_TYPES_U1
or index HR_DOCUMENT_TYPES_U1 exists on another table.
Create it with the statement:

Warning: Object "HR_DOCUMENT_TYPES" is not registered in table "FND_OBJECT_TABLESPACES".


Start time for statement below is: Mon Sep 22 2014 20:57:19

CREATE UNIQUE INDEX HR.HR_DOCUMENT_TYPES_U1 ON HR.HR_DOCUMENT_TYPES
(SYSTEM_DOCUMENT_TYPE) LOGGING STORAGE (FREELIST GROUPS 4 FREELISTS 4 )
PCTFREE 0 INITRANS 11 MAXTRANS 255 COMPUTE STATISTICS  TABLESPACE
APPS_TS_TX_IDX

Statement executed.

AD Worker error:
The index cannot be created as the table has duplicate keys.