Hi Divya,
Grant the following privileges to your schema:
GRANT SELECT ON SCHEMA <SCHEMA_NAME> TO _SYS_REPO WITH GRANT OPTION;
GRANT EXECUTE ON SCHEMA <SCHEMA_NAME> TO _SYS_REPO WITH GRANT OPTION:
GRANT INSERT ON SCHEMA <SCHEMA_NAME> TO _SYS_REPO WITH GRANT OPTION;
GRANT UPDATE ON SCHEMA <SCHEMA_NAME> TO _SYS_REPO WITH GRANT OPTION;
Regards,
Vivek