The referenced surfaces are missing or do not form the specified feature type. A change in the model can cause this condition. For example, the geometry was deleted. This condition also causes the feature to be considered a failed object, as indicated by the additional message: Failed objects in the model.
To resolve, edit the feature and redefine the tolerance feature.
You can sometimes repair the model by deleting the feature. However, when you delete a feature, all objects that reference the feature (DRFs for example) are also deleted.