The proposed Recommendation draft ‘Digital twin network - general technical requirements of model domain in digital twin layer’ can help achieve the below key benefits. Help the industry to reach a consensus and unified understanding of DTN’s model domain in network digital twin layer, including model types and general functionalities of model domain within DTN system. Provide guidance to build various modeling methods for DTN system, via specifying the general technical requirements of data models in DTN’s model domain. Recommendation ITU-T Y.3094 defines data model types and functionalities of digital twin network (DTN) model domain, and specifies the requirements of data models, the requirements of orchestration and management, and the requirements of unified interfaces of DTN’s model domain. It supports the industry to have a unified understanding of DTN’s model domain, and provides guidance to build various modeling methods for the DTN system.