In Variation Analysis, when validating or initialing a model for simulation, the following message may appear:
This message indicates that there is a datum reference frame with one or more datum features of size that the software cannot automatically determine the gage size for simulation during feature fabrication. The following video provides further information on the meaning behind this message and how to calculate & apply the gage size for these cases.
Note that this message is not an error and is merely a warning. The error message is to a changed warning in patches 220.127.116.11_a01_7 & 18.104.22.168 and in releases 11.6 & 12.1. If gage size(s) are not explicitly specified, the warning can be ignored and the software will make an assumption on the gage size.