In our website in the specific FDI tables we also include metadata information:
https://www.dnb.nl/en/statistics/data-search/#/?kindofproduct=mainproduct&tags=directe_investeringen   
 You also can find an overview on: http://dsbb.imf.org/Pages/SDDS/DQAFBase.aspx?ctycode=NLD&catcode=CDS00