From TDWG Terms Wiki
|Sample Size Value|
No type definition was found for "sampleSizeValue" in the dwc import.
|Search for values|
Notes: For discussion see http://terms.tdwg.org/wiki/dwc:sampleSizeUnit.
Example(s): A sampleSizeValue must have a corresponding sampleSizeUnit. Example: “5" for sampleSizeValue with "metre” for sampleSizeUnit.