Model-Based Definition > Geometric Dimensioning and Tolerancing Advisor > Advisor Message Help > DRF Messages > Orientation of Tertiary Datum Not Allowed
Orientation of Tertiary Datum Not Allowed
The orientation of a tertiary datum that is derived from targets must meet one of the following criteria:
1-pnt plane constrains a translational DOF and its normal vector is parallel to that DOF.
1-pnt plane constrains a rotational DOF and the plane is parallel to the axis of rotation.
This problem causes the DRF to be considered a failed object, as indicated by a separate 'There are failed objects in the model' message.
You should either redefine the datum reference frame or redefine the datum from targets.