To determine that the IDE will be able to deploy correctly, use this url in your browser - The same text as you entered into LX_TargetApplicationUrl and append '/lansaweb?w=XVLSMTST&r=GETRESPONSE&vlweb=1&l=eng&p=dem'
A good response (200) is all that is required. A sample good response follows:
{"webroutine":{"context":{"action-request":"/app1/lansaweb","dec-separator":".","images-path":"/app1/images","iso-lang":"en","language":"ENG","partition":"DEM","service-name":"XVLSMTST_GetResponse","session-key":"","session-key-method":"hidden","session-key-name":"_SESSIONKEY","technology-service":"LANSA:XHTML","user-id":"PCXUSER3","webapplication":"XVLSMTST","webapplication-title":"Test VL Web Application Server","webroutine":"GetResponse","webroutine-title":""},"messages":["Web server is running"],"fields":{"PROGRAMLIBRARY":{"type":{"t":"H","l":10},"value":"DC@PGMLIB"}}}}