2662478 - Unknown Status Overview in System Monitoring

In System Monitoring UI on Solution Manager System 7.2 , the status overview of some systems is showing as "unknown", the following symptoms may be seen:

• Technical monitoring of some ABAP and Java systems which are not configured in solution manager but still they are visible in System monitoring UI with status as "Unknown", when selecting one of these systems, error message  "The selection does not have any monitoring information" is shown 
• For system type WLY~EM, when selecting this system all metrics displayed may have a rating, but these are not configured directly for System Monitoring

SAP Solution Manager 7.2 (SP03 - SP05)

WLY~EM, Unknown Status, System Monitoring, UI, Overview Status, Grey , KBA , SV-SMG-MON-SYS , System Monitoring , SV-SMG-MON-ALR , Monitoring/Alerting/Reporting Infrastructure , Problem