The first requirement is a documented governance framework that defines how the participating firms are expected to work together. The identified failures are not limited to unauthorized access; they also include inconsistent data and breakdowns in communication. Coordination protocols must therefore establish model ownership, authorized editing responsibilities, submission requirements, quality-control gates, issue-escalation paths, communication channels, and accountability for approving changes.
Once these rules are agreed, the BIM manager can configure Common Data Environment permissions to enforce them. Implementing tighter access controls before establishing the underlying responsibilities may prevent some unauthorized edits, but it does not determine who should own each dataset, which checks must be performed, or how coordination decisions are communicated.
Option A delegates model maintenance but does not establish consistent cross-team procedures or editing rights. Option D may expose design assumptions, yet it is focused on modelling strategy and conflict identification rather than comprehensive information governance.
Effective BIM coordination depends on both procedural and technical controls. The procedural protocol comes first because it provides the basis for access configuration, quality reviews, issue workflows, model exchange, and audit requirements across the delivery team.
Reference topics: BIM coordination protocols; model ownership; editing authority; Common Data Environment governance; quality control; communication planning; risk mitigation.
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