Resolve Eclipse Build Maven Project module cannot be converted to 2.3

When the MAVEN project modifies the Dynamic Web module to 2.3 in project facets, the cannot change version of the project facet Dynamic Web module to 2.3 appears.

First open the Navigator,

Modify the project's settings to open the project under Navigator. Settings directory org.eclipse.wst.common.component, (change 1.5 to 1.6)

Open Org.eclipse.wst.common.project.facet.core.xml, <installed facet= "Jst.web" version= "2.4"/> Change to <installed facet= "Jst.web" version= "2.3"/>

Then, look at the properties of the project, complete the changes!

Resolve Eclipse Build Maven Project module cannot be converted to 2.3