ODATA AUTHORIZATION - Not authorized NO exception throw location recorded. Stack generation suppressed.

Hello Everybody,

i have the problem, with accessing an ODATA - Service.

accessing the meta data works:

accessing the ODATA directly don't work:

the definition of the ODATA points to a CDS-View:

the CDS - View is based on a Public Synonym in the Schema "_SYS_BIC" of a Content-Table the content table "EPMSAMPLEDATA.SNWD_AD"

i have greated a role which is assigned to my user and i have granted the access to all active objects per sql.

followed the role:

any hints ?

best regards