The shared parameters in the configuration file ifrevit.cfg are prepared for mapping from VDI 3805 features. The characteristics are already structured according to VDI sheet categories.
So if certain class attributes are assigned to variables/values in the VDI classification, they are automatically transferred to Revit's Shared Parameters.
Each category initially starts with 3 lines:
[ClassMapping(hasClass(vdi3805,017-010)):include(ClassMapping)] Mapping100=revit,RVT_SHARED_PARAMETER_FILES,RVT_SPF_PATH,?"$CADENAS_DATA\\datasetup\\classsystem\\vdi3805\\spf\\vdi3805_017_$CADENAS_LANGUAGE.txt" Mapping101=revit,RVT_SHARED_PARAMETER_FILES,RVT_SPF_CLASSNAME,?"vdi3805_spf,vdi3805_spf_feat" Mapping102=revit,RVT_SHARED_PARAMETER_FILES,RVT_SPF_PROPERTYGROUP,?"<PG_MECHANICAL>"
The output in the rfa files is only working if the needed VDI 3805 classification is available on the client which generates the rfa files.
Depending on the settings in the configuration file ifrevit.cfg, the mapping is executed on the fly while the rfa file is being generated.
As the mapping of the shared parameters is carried out in ifrevit.cfg, no shared parameter classification is required for VDI3805.