Geometric Tolerance (PCDMIS)

PC-DMIS needs to know the nominal and tolerance of a datum feature of size when used in a datum reference frame with MMB.  This is done by reporting the size of the datum feature before using that feature in a Geometrical Tolerance command.  Add a dimension somewhere before the Geometrical Tolerance command that defines the nominal and size tolerance of the feature.  This could be a location dimension with the X,Y,Z, and size dimensions reported, another Geometrical Tolerance command that relates the datum feature to a datum reference frame, a size dimension, etc.  The main takeaway is that the datum feature must be reported before any other Geometrical Tolerance uses the feature in a datum reference frame.

This isn't an error message. It's telling you that unless you specify a material modifier on a datum feature, PC-DMIS it will use the calculation of 0 @ MMC to determine datum shift. You may be allowed more datum shift if you have datum features that could allow shift based on their size variation within their allowable tolerance range, but it won't use that shift unless they are toleranced with MMC/LMC beforehand. 

Axel De la rosa 

Click the link below the message...

It will take you to a detailed explanation and worked example in the help file.

Just to clarify, you can't just add ANY geometric tolerance or size tolerance, there are strict rules on the types of tolerance that are included when calculating the material boundary condition.  The help file explains it in detail.