This message indicates that one or more of the datum reference strings includes unsupported attributes. This version of GD&T Advisor does not support the following:

You can keep unsupported attributes in the tolerance frame, but note that GD&T Advisor cannot verify whether unsupported attributes are correctly applied to datum features or how they affect the constraint state of related features.

To reset the annotation to its original state, right-click the object in the Feature Tree or Advisor Tree, and then select Reset from the context menu.