UMP:error An unexpected system error occurred. (4) not found, Received status (4) on response (for sendRcv) for cmd = 'nametoip' name = '/NMS/NMS-Server/NMS-Robot/mpse'

Document ID : KB000034948
Last Modified Date : 31/01/2019
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Issue:

In this scenario, sometimes you will notice that UMP will go down when you install a patch or do an upgrade , you will notice the following error:


An unexpected system error occurred.?

(4) not found, Received status (4) on response (for sendRcv) for cmd = 'nametoip' name = '/NMS/NMS-Server/NMS-Robot/mpse'?


 
Resolution:
The first thing one should do is look at the error and ?observe the path i.e "= 'nametoip' name = '/NMS/NMS-Server/NMS-Robot/mpse'" The last part of the error shows you what is causing the problem.The mpse probe is missing from the needed probes to run UMP. ?In order to fix the issue do the following:

1. Look in the archive and find the missing probe mpse
2. Deploy it to the NMS server location?
3. Restart dap, dashboard, and cold start (Deactivate-Activate) the wasp probe

After the probes come back up, you should be able to access UMP.