If another collaborator is viewing or editing the same resource, the workbench can show an advisory indicator. The server does not lock ordinary resources.

Project graph writes carry revision information. If your edit is stale, Gessa shows a conflict message with a reload/retry path. AI mutation tools receive the same structured conflict information.

Prefab Mode save conflicts show merge or override choices. Non-conflicting field changes can merge automatically; conflicting fields stay visible so the editor can choose deliberately.

Hierarchy reorder conflicts resolve deterministically. The latest committed order wins, and the refreshed hierarchy keeps every entity.