Access XS Classic Schema from XSA HDI container

Hello,

I have an existing XS Classic Schema (MY_XS_CLASSIC_SCHEMA) created via a .hdbschema file in my HANA system.

I need to access the tables in this existing XS Classic schema from a new XS Advanced HDI container (MYHDI)

I defined a user provided service for this purpose. This service was created using a HANA database user (XS_CLASSIC_USER) that has SELECT access to the existing XS classic Schema.

The mta.yaml file was modified to add the user provided service and a .hdbgrant file is defined in the HDI container.

Now when i build the HDI container i get the below error.

Error: Error executing: GRANT "SELECT" ON SCHEMA "MY_XS_CLASSIC_SCHEMA" TO "MYHDI_HDI_MYHDIDBMODULE_1#OO";(nested message: insufficient privilege: Not authorized)

The user I used to create the User Provided Service has the SELECT access for the XS classic schema but don't have the GRANTABLE option. Is that the issue?

If yes then how can I create a HANA data base user in XS Classic which has a SELECT object privilege to a hdbschema with GRANTABLE option? I tried logging in with the SYSTEM user and running the below command but it fails with an authorization issue.

GRANT SELECT on schema MY_XS_CLASSIC_SCHEMA to XS_CLASSIC_USER WITH GRANT OPTION.

Thanks for your help,

Lijo John