Patch 18911810 fails on index POS_SUPPLIER_SEARCH_INDEX does not exist

hi All,

Encountering issues while applying 18911810 patch below are the errors, applied RDBMS patch 16706896 still issues are not resolved

DECLARE
*
ERROR at line 1:
ORA-20000: possearchindex.sql(500): ORA-20000: Exception at POS_SUPPLIER_SEARCH_INDEX_PKG.create_index(1800): ORA-20000: Exception at POS_SUPPLIER_SEARCH_INDEX_PKG.crea
te_index(1800): ORA-29855:
error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: Oracle Text error:
DRG-10502: index POS_SUPPLIER_SEARCH_INDEX does not exist
DRG-11135: feature not generally available
ORA-06512: at line 57

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+ Customer has followed all the instructions give in How to troubleshoot issues on script POS_SUPPLIER_SEARCH_INDEX.sql (Doc ID 1677737.1)

+ DB patch applied -