Model-Based Definition > Geometric Dimensioning and Tolerancing Advisor > Advisor Message Help > Datum Messages > Datum Is Not Referenced
Datum Is Not Referenced
This datum is not referenced by a datum reference frame. Although this is technically OK, an unreferenced datum may cause confusion for downstream users of the model. It is generally good practice to remove the unreferenced datums from the model. To do so, right-click on the datum in the Feature Tree and select Delete from the context menu.