Lodgement of works on the TrustMark Data Warehouse is mandated (please note the ORP and landlord drop down lodgement menu on TrustMark Data Warehouse)
Rhaid gosod y gwaith ar borthol TrustMark Data Warehouse (sylwch fod lle ar y gwymplen ar gyfer dewis gosod ORP a landlordiaid ar TrustMark Data Warehouse)