ALLVR leverages the collaboration in construction projects. The open-BIM platform provides an interaction & collaboration process for planning teams directly on the 3D-construction model. For this it merges all different 3D products into one central digital twin of the current state of the planning CAD tool independently in order to conduct distributed planning meetings inside the model with all planning stakeholders. The solution serves as a tool for automatized clash- & issue management, which can document, assign & synchronize all issues with the respective responsible stakeholder. This increases the transparency of the planning process and simplifies the collaboration, communication & documentation.