2041235 - SM12 diagnosis shows "Error: Lock server exists, but is not addressed" or "Error: Local lock management process despite external lock management"

While running  "transaction SM12 => Menu 'Extras' => Diagnosis", the following errors are shown:

Error: Local lock management process despite external lock management    
Error: Lock server exists, but is not addressed: <instance name>_<system_id>_<instance_number>   

The screenshots look like following:
   

SAP NetWeaver system

SM12, enqueue, lock, entry, delete, rdisp/wp_no_enq, cannot be addressed, despite external lock management,central lock server , KBA , BC-CST-EQ , Enqueue , Problem