When having an interface with method:

   @POST
    Response createDummy(@Valid DummyClass payload);

And a subclass that implements it with:

   @Override
    public Response createDummy(DummyClass payload)

The code will only validate the parameter if @Valid is added on the subclass. He interprets that as a bug. Looking at the spec, I believe he is correct, going by section 7.5

From the JAX-RS spec

> *Annotation Inheritance*
> The rules for inheritance of constraint annotation are defined in [16]. It is worth noting that these rules
> are incompatible with those defined in Section 3.6. Generally speaking, constraint annotations in [16] are
> cumulative (can be strengthen) across a given type hierarchy while JAX-RS annotations are inherited or,
> overridden and ignored.
> The goal of this specification is to enable validation of JAX-RS resources by leveraging existing Bean
> Validation implementations. Therefore, JAX-RS implementations MUST follow the constraint annotation
> rules defined in [16].

It appears to work with @Valid in JBoss EAP 6, though I know that implementation was tech preview.

While adding @Valid will in every subclass will work, this would be a large undertaking for the customer, so they would like to know if there is an easier workaround.