The CableTraySpec sheet of the ElectricalTranslationMap.xls workbook maps cable tray specification names between the .xml file and Smart 3D.
XML Spec - Enter the cable tray specification name that appears in the .xml file.
If the XML spec is not mapped in the CableTraySpec mapping sheet, then the PDS software assumes that the specification is present in Smart 3D. The software then tries to import the electrical run with that specification.
S3D Spec - Enter the cable tray specification name to map to in Smart 3D.