but I didn't understand you
what's ( Really ? Osama ?) !!!!!!!!!!!!!!!!
Sounds like you have an unknown device that you need to let Solarwinds know about so we can add it to our SWdiscovery.cfg file. Check out this tip for doing so:
The specified item was not found.
Let me know if that helps you.
Can you manually add those nodes to NPM? Click Settings -> Add Node and enter the IP address of the HP switch. Make sure SNMP is enabled on this switch first. After that is complete, you will need to configure the switch to export sflow data. You can find some configuration examples at the end of the Admin Guide