Custom password verify function in PDB

Hi all,

I create a custom password verify function "ORA_CUST_VERIFY_FUNCTION" in sys schema on container DB and grant to public:

GRANT EXECUTE ON ora_cust_verify_function TO PUBLIC;

In the pluggable DB I want to associate the ora_cust_verify_function with the PASSWORD_VERIFY_FUNCTION of "DEFAULT" profile of pluggable, but i have the following error:

SQL> alter session set container=PDB1 ;

Session altered.

SQL> ALTER PROFILE DEFAULT LIMIT PASSWORD_VERIFY_FUNCTION ORA_CUST_VERIFY_FUNCTION;

ALTER PROFILE DEFAULT LIMIT PASSWORD_VERIFY_FUNCTION ORA_CUST_VERIFY_FUNCTION

*

ERROR at line 1:

ORA-07443: function ORA_CUST_VERIFY_FUNCTION not found