2873276 - Error in data collector No data found for system XXX client XXX, check SAP Note 2596287 - Solution Manager

• In Urgent Change, try to release the transport request in the task list and getting the error:
  Error in data collector No data found for system XXX client XXX; check SAP Note 2596287
• Tried to implement SAP Notes 2717457 and 2596287 but they are already delivered to managed system and manual checks defined in notes were not the problem
• SAP Note 2123829 is not relevant
• Error in Retrofit, getting at the time alert viewer TMS error 'Password logon no longer possible - too many failed attempts'

SAP Solution Manager 7.20

TMSADM, user, TMSADM1,Error when opening an RFC connection (CPIC-CALL: 'ThSAPOCMINIT', communication r, LOCATION: SAP-Gateway on host, , KBA , SV-SMG-CM , Change Request Management , Problem