The European Payments Council has made its API Reference Toolbox (ART) test and self-certification platform for the Verification Of Payee (VOP) scheme, developed with StreamMind, available to payment service providers (PSPs) that are not using a Routing and/or Verification Mechanism (RVM) to test and self-certify their VOP API implementation. VOP is designed to help PSPs meet the Instant Payment Regulation requirement to offer an IBAN-name check service before a payer authorises a credit transfer or instant credit transfer. VOP is an API-based scheme expected to be implemented by thousands of PSPs in Europe ahead of the October 2025 regulatory deadline and is scheduled to go live on 5 October 2025. ART was introduced to mitigate interoperability risks among scheme participants and is also the basis for the EPC requirement that RVM providers successfully complete a self-certification test, with access now extended to PSPs that plan to participate without an RVM. PSPs that want to use the platform are asked to complete a form, after which ART will send an invitation to self-register and start testing, supported by an onboarding manual and additional guidance in the platform’s FAQ.