Hi all, It seems that we introduced a mistake in CDI 2.0 regarding its alignment with JTA. See issues.jboss.org/browse/CDI-705 Transactional observer bound to BEFORE_COMPLETION shouldn’t be triggered if the transaction is rolled back or marked for roll back. I suggest that we skip the matching test in the TCK [1] and allow impl to skip this rule and align on JTA. JTA should be corrected in a coming MR. Thanks for your feedback [1] github.com/cdi-s...t.java Antoine