For a customized or a new pattern the pattern may fail in Top-Down discovery of a business service map (Application Service from London) with below log message:
"Pattern has classification entry but it was not returned for entry point's process, skipping process based id section."
Incorrect identification was set on the pattern (of type application pattern) and so the pattern could not proceed with that and so it throws the error message and stope proceeding to further pattern steps.
Make sure the "Entry Point Types" and "Find Process Strategy" are valid. Please check the below docs for more details about these Example of creating an application pattern.
Example: One common mistake we make is to select the incorrect "Find Process Strategy" as "Listening Port" instead of "Target IP and Port".