Huawei Huawei Telefonica Swisscom Swisscom This document shares experience in modelling Digital Map based on the IETF RFC 8345 topology YANG modules and some of its augmentations. The document identifies a set of open issues encountered during the modelling phases, the missing features in RFC 8345, and some perspectives on how to address them. For definition of Digital Map concepts, requirements and use cases please refer to the "Digital Map: Concept, Requirements, and Use Cases" document. Discussion Venues This note is to be removed before publishing as an RFC. Source for this draft and an issue tracker can be found at https://github.com/OlgaHuawei.