SAP Message RX090 - Channel &1 is locked and you are not allowed to display it

Diagnosis
You have tried to switch to the editor mode for channel &V1&. However,this is currently locked for editing by another user.

System Response
You attempted to switch to the display mode of the channel. You do nothave any authorization for this.

Procedure
At a later point in time, attempt to switch to the editing mode of thechannel.
Where necessary contact your system administrator, in order to sort outyour authorization.