One of our CAS team members located a error where Trimble Groundworks failed to recognize a calibration file generated by Trimble Access.
After speaking with the Product Management and Engineering teams it has been determined that calibration files generated by Trimble Access and utilize a geoid are unable to be referenced by Trimble Groundworks and Trimble Siteworks. The error comes from the Vertical Adjustment that references a geoid by the Grid File Name rather than the Geoid Name, causing a disconnect when referencing the CoordSystemDatabase.xml and trying to locate the correct geoid.
For example;
<Geoid>
{{ <Name>GEOID18 (Conus)</Name>}} ------ (Expected geoid reference by Siteworks and Groundworks)
{{ <SystemID>4775</SystemID>}}
{{ <GridFileName>g18us.ggf</GridFileName>}} -------- (Actual geoid reference in Trimble Access Calibration Files)
{{ <VertDatumEPSG>5103</VertDatumEPSG>}}
{{ <VertCSEPSG>5703</VertCSEPSG>}}
</Geoid>
If you come across this issue in the field, please consider generating the same site calibration using either Trimble Siteworks, or, Trimble Access without a geoid (and potentially a local site calibration).