Hi community.
I am trying to use virtual tables created in a classc schema in a CAP project.
To acheive this, I have set up the following objects.

1. Roles to access the virtual tables
create role VTROLE; grant select on schema "JDBCUSER" to VTROLE; create role VTROLE_G; grant select on schema "JDBCUSER" to VTROLE with grant option;<br>
2. A user who is granted above roles with admin option
create user VTUSER password "password" set usergroup default; alter user VTUSER disable password lifetime; grant VTROLE to VTUSER with admin option; grant VTROLE_G to VTUSER with admin option;<br>
3. A user provided service to access the virtual tables
cf cups demo-inventory-ups -p "{\"user\":\"VTUSER\",\"password\":\"password\",\"tags\":[\"hana\"] , \"schema\" : \"JDBCUSER\" }"<br>
4. .hdbgrants
{
"cross-schema-ups": {
"object_owner": {
"global_roles": [
{
"roles": [ "VTROLE_G" ]
}
]
},
"application_user": {
"global_roles": [
{
"roles": [ "VTROLE" ]
}
]
}
}
}<br>
* also tried below
{
"cross-schema-ups": {
"object_owner": {
"roles": ["VTROLE_G"]
},
"application_user": {
"roles": ["VTROLE"]
}
}
}<br>
5. mta.yaml
When I execute "cf deploy", I came across the following error.
Execution of task "deploy" on application "demo-inventory-db-deployer" failed.
In the detailed log, there were the following errors.
#2.0#2023 01 19 04:09:33.432#Z#DEBUG#com.sap.cloud.lm.sl.xs2.f2dd3430-97ae-11ed-b3ff-eeee0a98ecf0.demo-inventory-db-deployer.stageAppTask# ######org.cloudfoundry.multiapps.controller.persistence.services.ProcessLogger########flowable-async-job-executor-thread-24294### [PollStageAppStatusExecution] [demo-inventory-db-deployer] 34ddcbe7-ba80-4ac5-99ef-fd8f35c9bc59 [Thu Jan 19 03:56:59 UTC 2023] (nested message: invalid role name: VTROLE_G: line 1 col 7 (at pos 6)) (STDERR, APP/TASK/deploy)# #2.0#2023 01 19 04:09:33.432#Z#DEBUG#com.sap.cloud.lm.sl.xs2.f2dd3430-97ae-11ed-b3ff-eeee0a98ecf0.demo-inventory-db-deployer.stageAppTask# ######org.cloudfoundry.multiapps.controller.persistence.services.ProcessLogger########flowable-async-job-executor-thread-24294### [PollStageAppStatusExecution] [demo-inventory-db-deployer] 34ddcbe7-ba80-4ac5-99ef-fd8f35c9bc59 [Thu Jan 19 03:56:59 UTC 2023] Error: Error executing: GRANT "JDBCUSER"."VTROLE_G" TO "0DF41154432140A6A45C380671E40976#OO"; (STDERR, APP/TASK/deploy)#<br>
The second message indicates that the deployer was trying to grant "JDBCUSER"."VTROLE_G" to the object owner but there was no such role. The roles are global and schema name is not attached.

Could someone please point out the step I may have done incorrectly or if any steps are missng?
Best regards,
Mio