Message Processing via SOLMAN_WORKCENTER

Hello!
We have configured Incident Management (Solution Manager 7.1 SP4) and can already create messages via CRM_UI.

When we try to access or process the message via SOLMAN_WORKCENTER --> Incident Management the message will be opened with separate window and we get the following error:

When I try to see some messages via "Fast Display Message" I get the following error:

Details No access for action Display of object type Incident (AIC_OB_INCIDENT)

Quesitons:

Is it possible to process messages via SOLMAN_WORKCENTER with Solution Manager 7.1?
Which customizing settings do we need/miss?

kind regards