Suppliers will engage with their organisations and the core NIR team throughout the onboarding process. Suppliers will go through the Digital Onboarding Service (DOS) to test their solutions against NIR. Suppliers will gain a technical conformance certificate to show they now have the NIR connection. Suppliers and orgs will then work together in an INT environment to test their supplier’s integration of NIR in their local test systems, whilst completing the assurance activities. Organisations that complete INT testing with their supplier will then get a go live date with NIR once assured.