From looking at the transformer debug output for the application class transformation, I see:

Hibernate51CompatibilityTransformer is missing some transformations for VersionType ----------------------------------------------------------------------------------- Key: WFLY-10981 URL: https://issues.jboss.org/browse/WFLY-10981 Project: WildFly Issue Type: Bug Components: JPA / Hibernate Affects Versions: 14.0.0.Final Reporter: Martin Simka Assignee: Scott Marlow There is probably missing transformation for synthetic "bridge methods" in {{org.hibernate.type.VersionType}} {noformat} Caused by: java.lang.NoSuchMethodError: org.jboss.as.test.compat.jpa.hibernate.transformer.IntegerType.seed(Lorg/hibernate/engine/spi/SessionImplementor;)Ljava/lang/Integer; at org.jboss.as.test.compat.jpa.hibernate.transformer.IntegerType.seed(IntegerType.java:26) at org.hibernate.engine.internal.Versioning.seed(Versioning.java:42) at org.hibernate.engine.internal.Versioning.seedVersion(Versioning.java:73) at org.hibernate.event.internal.AbstractSaveEventListener.substituteValuesIfNecessary(AbstractSaveEventListener.java:428) at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:274) at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:200) at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:143) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:192) at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:38) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:177) at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:32) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:73) at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:709) at org.hibernate.internal.SessionImpl.save(SessionImpl.java:701) at org.hibernate.internal.SessionImpl.save(SessionImpl.java:696) at org.jboss.as.test.compat.jpa.hibernate.transformer.SFSBHibernateSessionFactory.createQueueOwner(SFSBHibernateSessionFactory.java:231) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.jboss.as.ee.component.ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptor.java:52) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422) at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:509) at org.jboss.as.weld.interceptors.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:90) at org.jboss.as.weld.interceptors.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:101) at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422) at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422) at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422) at org.jboss.as.jpa.interceptor.SFSBInvocationInterceptor.processInvocation(SFSBInvocationInterceptor.java:57) at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422) at org.jboss.as.ejb3.tx.StatefulBMTInterceptor.handleInvocation(StatefulBMTInterceptor.java:94) ... 191 more {noformat} I don't expect users to implement directly {{VersionType}} but {{UserVersionType}}.