Share Email Facebook Twitter LinkedIn Tolerance Advisor Messages List and explanation of Tolerance Advisor browser messages. Topics in this section Datum feature label has syntax errors Datum object is missing Datum reference string has syntax errors Datum type is unknown Dimension reference feature is not valid DRF failed DRF is invalid DRF is not referenced DRF may have poor repeatability DRF referenced is not valid DRF specification is incomplete Failed objects in the model Form is not fully constrained Form tolerance value must be smaller Gage size does not fall within the feature extents GCS is not valid for the feature/DRF combination Geometric tolerance has syntax errors Geometric tolerance is over-constraining Geometry references not valid Insufficient opposing region to be a feature of size Location not fully constrained Model contains external annotation elements Not all part DOF are constrained One or more surfaces are unconstrained Orientation is not fully constrained Orientation of secondary datum is not allowed Orientation of tertiary datum is not allowed Pattern is not valid Primary datum feature may be too small Projected Tolerance Zone value must be greater than zero Referenced datum does not exist Referenced datum is not supported Should be set as a datum feature or reordered Size is not fully constrained System of units not compatible with tolerancing standard Target reference is missing Tolerance Feature and modeling occurrence count do not match Tolerance Feature Failed Tolerance feature shares faces Tolerance on subfeature must be smaller than related tolerance Tolerance specification is incomplete Tolerance value must be smaller than preceding value Unequally Disposed profile value not within valid range Unspecified tolerances for some dimensions Unsupported datum reference attributes User-specified unit basis tolerance Zero-value (or inconsistent) tolerance not allowed Parent topic: About 3D Annotation and Model-Based Definition