JSF2.2 in eclipse on wildfly8.1 - eclipse

Question

I have a project created from some maven archetype, dont remmebrer realy which one. I use maven and Eclipse Kepler.
The project is deployed on Wildfly8.1 server
In the project facests I have JSF 2.0 and when I try to change the facet to JSF 2.2 I get the massege "Cann not change version of facet JavaServerFaces ..."
Do I have to change something in my maven pom file?
Here is my maven pom :
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>ypay</artifactId>
<groupId>si.arctur</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>ypay-web</artifactId>
<packaging>war</packaging>
<name>ypay Web module</name>
<dependencies>
<dependency>
<groupId>org.jboss.spec.javax.ejb</groupId>
<artifactId>jboss-ejb-api_3.1_spec</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.primefaces.extensions</groupId>
<artifactId>primefaces-extensions</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>4.0</version>
</dependency>
<!-- Dependency on the EJB module so we can use it's services if needed -->
<dependency>
<groupId>si.arctur</groupId>
<artifactId>ypay-ejb</artifactId>
<type>ejb</type>
<scope>provided</scope>
</dependency>
<!-- Import the JAX-RS API, we use provided scope as the API is included
in JBoss AS 7 -->
<dependency>
<groupId>org.jboss.spec.javax.ws.rs</groupId>
<artifactId>jboss-jaxrs-api_1.1_spec</artifactId>
<scope>provided</scope>
</dependency>
<!-- Import the CDI API, we use provided scope as the API is included
in JBoss AS 7 -->
<dependency>
<groupId>javax.enterprise</groupId>
<artifactId>cdi-api</artifactId>
<scope>provided</scope>
</dependency>
<!-- Import the JPA API, we use provided scope as the API is included
in JBoss AS 7 -->
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<scope>provided</scope>
</dependency>
<!-- Import the JSF API, we use provided scope as the API is included
in JBoss AS 7 -->
<dependency>
<groupId>org.jboss.spec.javax.faces</groupId>
<artifactId>jboss-jsf-api_2.2_spec</artifactId>
<version>2.2.4</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.omnifaces</groupId>
<artifactId>omnifaces</artifactId>
<version>1.7</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<!-- Java EE 6 doesn't require web.xml, Maven needs to catch
up! -->
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
</project>

Answer 1

You don't mention which Eclipse plugins you use. Assuming you have a current version of JBoss Tools, the facets should be set correctly when first importing the Maven project into Eclipse, depending on the POM dependencies.
In your POM, there's a mixture of Java EE 6 and 7 dependencies, which might be causing the problem.
Try deleting the javax:javaee-api:6.0 dependency - you have indidual Java EE 7 APIs further down in your POM -, then run Maven | Update project in Eclipse.
If that does not help, delete the project from the workspace, delete all Eclipse metadata from the file system (.project, .classpath,. settings) and re-import the project.