Verification rules are applied to each record by the NBN Record Cleaner. They are simple text files which can be created for any taxonomic group or geographical area.
There are nine main types of rules.
Specifies a list of species that are expected to be found.
This checks that the value of a field contains only a predetermined set of values.
Checks that records are within a date range.
Allows records to be checked for being within a range of dates in any year.
This checks that the coordinates of the record are within the polygons supplied.
Checks that grid squares or Vice-counties are in the list specified.
Checks that the content of a field contains values that pass the specified regular expression check.
Supply identification difficulty tags (in the range 1-5) for species.
Test records against custom external modules.
Information on how to create and distribution rule files for your taxonomic group or area can be found in the Rule Guide which may be downloaded below.
NBN Record Cleaner Rule Guide
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