The Calibration Target Management Information Model defines the CalibrationTargetType (see Figure 10, and 7.4.1 for details). It represents a calibration target and contains base information about the last validation date of the calibration target, its identification, operational conditions, etc. What the calibration target can be used for is provided in a folder of calibration target features, potentially supporting several features. This specification distinguishes different categories of calibration targets, which is provided by the calibration target category.
The information model only provides the TypeDefinitions to manage calibration targets. It does not provide, how to organize several calibration targets in an OPC UA Server. This is either done in a vendor-specific manner or defined by some other companion specifications.