The API Reference Toolbox (ART) will be used for VOP interoperability tests, VOP scheme compliance and self-certification.
All RVMs will be required to perform the self-certification on this platform. PSPs exchanging VOP requests and responses directly between themselves (i.e. without RVM involvement) will be strongly recommended to do so as well.
For the PSPs using one (or more) RVM(s), interoperability will be ensured by the RVM(s).
More information about the ART will be published gradually on the EPC website.