As it is a legal requirement in Wales for both the landlord and rental property to be registered with Rent Smart Wales, we have set up RSW certificates for each property so that we can get reminded when they are coming up for renewal. What would be really useful is if we were able to mark the RSW certificate object we have created as mandatory, much like the gas certs, for every property in Wales. This would stop us signing tenancies for properties for unregistered landlords and/or properties.