Target Runtime Apache Tomcat v5.0 is not defined error resolution

After you download eclipse, import the previous project to report the following error, but do not affect the operation:

Description Resource Path Location Type
Target Runtime Apache Tomcat v5.0 is not defined. Lfpms Unknown Faceted Project problem

Workaround:

Locate the folder for the project you are working on in the Workbench directory/.settings/org.eclipse.wst.common.project.facet.core.xml

When opened, displays

<?xml version= "1.0" encoding= "UTF-8"?>
<faceted-project>
<runtime name= "Apache Tomcat v5.0"/>
<fixed facet= "Jst.web"/>
<fixed facet= "Jst.java"/>
<installed facet= "Jst.web" version= "2.4"/>
<installed facet= "Jst.java" version= "5.0"/>
</faceted-project>
The <runtime name= "Apache Tomcat v5.0"/> Deleted, save can be resolved.