Solution Manager 7.1 Message Creation: Authorization

Hi Guys

I'm unable to create a message via the workcenter (URL). I get the error message: "You are not authorized to create a message for the this System or Client"  . The user has the role SAP_SUPPDESK_CREATE assigned to him. He exists in Solution Manager. I get the same problem when selecting one of the managed systems.

Any ideas?

Thanks.