The error message tells you what port the application it is looking for runs on. For example in hte picture below I have selected the node that is failing and it tells us it is looking for an applicaiton on port 17000 on address 172.23.16.241
If you click the connection above the failed endpoint; you will get information in the right hand plane about the endpoint it is looking for; in this case it is looking for some https server running on 17000. In the running process table you look for a process that has "Listening on contains 17000": In the example, below, my computer doesn't have an processes listening on port 17000.
The other possible problem is that you whatever process you have is not match the identification section, i.e. none of hte patterns knows about this application; and then it falls through; but realistically it should fall through to the "Generic Application" pattern if there is something rtunning on 19000
