This is a bug in CompositePolicyBuilderImpl.validateTransactionIntents(). It is failing the use of transactedOneWay with an interface that has both one-way and two-way methods. This is allowed; transactedOneWay applies only to the one-way methods. (It's conceptually the same as propagatesTransaction, which by definition applies to the two-way methods and is ignored for one-way methods.) The check should be deleted.