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Revit Based HydraCALC (Ribbon/Toolbar/Location)
Description:
Error placing Reference Points or Demand Area annotation... The 3D view ownerDBViewId is not locked.
The Calculation process is attempting to place reference points on an unlocked 3d view.
Re-run the calculation process starting at an orthographic view (floor plan, ceiling plan, section, etc) or lock the 3d view before starting the calc process.