Interceptors and decorators may not declare producer methods. If an interceptor or decorator has a method annotated @Produces, the container automatically detects the problem and treats it as a definition error.

org.jboss.jsr299.tck.tests.implementation.producer.field.definition.broken.interceptor.ProducerFieldOnInterceptorTest
org.jboss.jsr299.tck.tests.implementation.producer.field.definition.broken.decorator.ProducerFieldOnDecoratorTest
org.jboss.jsr299.tck.tests.implementation.producer.method.broken.decorator.ProducerMethodOnDecoratorTest
org.jboss.jsr299.tck.tests.implementation.producer.method.broken.interceptor.ProducerMethodOnInterceptorTest

in the TCK trunk