A transfer order may not be revoked by a participant in a system, nor by a third party, from the moment defined by the rules of that system.

In the case of interoperable systems, each system determines in its own rules the moment of irrevocability, in such a way as to ensure, to the extent possible, that the rules of all interoperable systems concerned are coordinated in this regard. Unless expressly provided for by the rules of all the systems that are party to the interoperable systems, one system's rules on the moment of irrevocability shall not be affected by any rules of the other systems with which it is interoperable.