oData authorization error

Dear experts,

Good day.

I have created trial account and using odata service to expose my own table.

The service generated correctly, I could visit service by url https://...myhanaxs/mytable.xsodata and https://...myhanaxs/mytable.xsodata/$metadata correctly.

But after that, if i want to visit the details under my odata, the system will raise error below:

exception 1: no.71000258 (ptime/query/checker/query_check.cc:2422) Not authorized NO exception throw location recorded. Stack generation suppressed.

For fix this error.

I created the role to grant my authorization in my object:

sql object ixxxxtrial:mypath:mytable.hdbtable: SELECT,INSERT,DELETE,DROP;

Then call the HCP procedure to grant the role to my own user. In this step, i got one exception:

I have totally no idea about this exception, cause system raise this message about I have no authorization for my own table in my own schema.

I think I must missed something which will cause the error.

Could anyone please help me about privileges error?

Thanks in ton and have a nice day.

best regards,

Andy Zhang