JPA validation reports Strategy class "uuid2" could not be found ---------------------------------------------------------------- Key: JBIDE-16265 URL: https://issues.jboss.org/browse/JBIDE-16265 Project: Tools (JBoss Tools) Issue Type: Bug Components: hibernate Affects Versions: 4.1.1.CR1 Reporter: Jim Boettcher Priority: Minor Fix For: 4.2.0.CR1 An Entity class with the following: @Id @GeneratedValue(generator = "system-uuid") @GenericGenerator(name = "system-uuid", strategy = "uuid2") @Column(name = "id", unique = true) private UUID id; gives the error: Strategy class "uuid2" could not be found changing the strategy to "uuid" will clear the error. My Project Facet has JPA 2.0 The JPA configuration has: Platform: Hibernate (JPA 2.0) JPA implementation: Disable Library Configuration the Hibernate jars are on the project classpath