Software version and build information is essential because Revit models are not backward-compatible. Opening and saving a model in a newer release upgrades it, potentially preventing teams using an earlier version from accessing the file. Build differences can also matter where hotfixes or updates affect cloud worksharing, interoperability, stability, or specific model functions.

Required add-ins are equally important. A model or workflow may depend on third-party tools for data validation, content placement, exports, parameter management, automation, or specialized object handling. If contributors lack the approved add-in or use incompatible versions, they may be unable to reproduce required processes or may generate inconsistent deliverables.

Project units and shared coordinates are critical for modelling and spatial coordination, but they are project-configuration issues rather than the most direct determinants of digital-tool compatibility. Graphic standards govern presentation and documentation consistency but do not determine whether the model and workflow can be operated within the organization's technology environment.

The kickoff should therefore confirm the approved software release, build, update policy, required add-ins, licensing, installation procedures, and testing responsibilities before production begins.

Reference topics: Software compatibility; Revit version management; approved builds; add-in governance; technology assessment; project kickoff; fast-track mobilization.