Using regular expression in SQL give error SQLCODE=171 and SQLSTATE=42815

Anyone using regular expression in sql has faced this issue?, I'm trying to
catch a string pattern inside a string, the string pattern should be like
this (it contain 2 dashes and the pattern ###-#######-#) or it contain the
pattern I##### or IMP##### using the below sql

Declare C0 Cursor for

Select

IFNULL(REGEXP_SUBSTR(PLDESCB,'I[0-9]{5}'),'N'),

IFNULL(REGEXP_SUBSTR(PLDESCB,'IMP[0-9]{5}'),'N'),


IFNULL(REGEXP_SUBSTR(PLDESCB,'[0-9]{3}-[0-9]{7}-[0-9]{1,}'),'N')

From SESSION.T1

Where

(REGEXP_MATCH_COUNT(PLDESCB,'-')=2 And

REGEXP_like(PLDESCB,'[0-9]{3}-[0-9]{7}-[0-9]{1}[^0-9]')) or

REGEXP_LIKE(PLDESCB,'I[0-9]{5}') OR

REGEXP_LIKE(PLDESCB,'IMP[0-9]{5}')

but when opening the cursor I'm getting error SQLCODE=171 and SQLSTATE=42815
What Am I doing wrong? if anyone could point me to the right direction I
will appreciate it.