When importing data Redbex has to match features found in the import sources against features already existing in Redbex, so that the feature data and observation data in the import sources can be imported to the right feature in Redbex and so that the import can determine what data shall be imported to features that are not yet in the Redbex.

The actual logic how features found in the import sources are matched to features already existing in Redbex is defined by the import type. However all import types have the same basic logic:

The import will only search for matches in the set of features that are member of the same data domain as the target data domain set in the import definition (including all sub-domains). Additionally only those feature will match where the feature type is the same as the feature type the import type suggests for the data in the sources.