Correspondence tables are important tools for comparing statistical data collected and presented using different classifications. They become necessary when the classification changes over time, or when different underlying frameworks do not allow classifications to be closely related. Correspondence tables between different versions of the same classification are used to describe the detailed changes that have taken place in the revision process.
Since NACE is used for collection and presentation of statistics in many areas, there has been a strong need for correspondence tables between the current NACE and its previous version. Complete detailed correspondences between NACE Rev. 2 and NACE Rev. 1.1, and vice versa, are presented here.