Overwrite default exception handling message in product cockpit

[gothiquo]

Hi all,

I have a workflow where a user should update a product.

When setting the workflow decision to approved, an exception is thrown by me from the code (see screenshot below)

The text is standard and I am trying to overwrite it with my exception's text using ExceptionTranslationHandler, however I tried it many times but the exception was never caught.

Here is my code:

<alias name="defaultExceptionTranslationService" alias="exceptionTranslationService"/>
<bean id="defaultExceptionTranslationService"
	class="com.hybris.cockpitng.service.impl.DefaultExceptionTranslationService">
	<property name="defaultHandler">
	    <bean class="com.hybris.cockpitng.service.impl.DefaultExceptionTranslationHandler"/>
	</property>
	<property name="exceptionHandlers">
		<list>
		    <bean class="com.my.package.backoffice.handlers.MyCustomTranslationHandler"/>
		</list>
	</property>
</bean>

Any idea?

Thanks in advance.