1) Create new WEB project (with or without server) 2) Convert it to maven project 3) Add persistance - version 2.1 or 2.2     - open project explorer, select project and open context menu     - select "New" -> "Other..."     - select "XML" -> "XML File"     - next     - set the parent folder - projectName + "/src/META-INF"     - set filename - "persistence.xml"     - finish     - replace the content of "persistence.xml" file with: persistence_jpa_2.1.xm_ or persistence_jpa_2.2.xm_ 4) Update the project using maven -> update project -> check the Force Update 5) Open project properties, navigate to Project Facets ASSERT: The JPA is checked and set to the right version - 2.1 or 2.2 according to the choice in step 3