SAP DBTech JDBC: [258]: insufficient privilege: Not authorized

I have created some attribute view in HANA studio (SAP HCP trial version) and while I am doing data preview I am getting "Not authorized" error.

I have already used these following queries with no luck.

1. GRANT SELECT ON SCHEMA NEO_6J900HWAS780Y33OPR3XT4595 TO p1940821701;
2. GRANT SELECT ON SCHEMA NEO_6J900HWAS780Y33OPR3XT4595 TO _SYS_REPO WITH GRANT OPTION;
3. GRANT SELECT, INSERT, UPDATE, DELETE, DROP ON SCHEMA NEO_6J900HWAS780Y33OPR3XT4595 TO _SYS_REPO WITH GRANT OPTION;
4. GRANT SELECT ON SCHEMA NEO_6J900HWAS780Y33OPR3XT4595 TO p1940821701 WITH GRANT OPTION;

I read somewhere that this is a limitation of HANA HCP trial version, though I am not sure about it. Please help me fixing this.

N.B: I am a newbie to HANA.