Hi Krishna, I'm not clear what object you are referring to. When I go into any user and click Object Privileges and search for word SEQUENCE all I get are these;
M_SEQUENCES(SYS)
P_SEQUENCES(SYS)
SEQUENCES(SYS)
So I did data preview on the last one and indeed I could see a list of all my sequences so I granted SELECT on SEQUENCES(SYS) with grantable to _SYS_REPO and I still get authorization error when debugging with my user.
Thanks,
-Patrick