NACE Code Rev 2.1 Updates

KG DATA CHANGE NOTIFICATION - Organization.naceClassification

We will be updating Organization.naceClassification to NACE Rev. 2.1 in build v437 of the Diffbot Knowledge Graph, targeted to go live in about two weeks. Please read on for more details.

Ordinarily, we take extraordinary measures to avoid breaking changes in the Diffbot Knowledge Graph ontologies. However, in some cases, there is no benefit in retaining a prior version of the data, so we replace an existing attribute with a new data format. The Organization.naceClassification field is one such case. The current version of the NACE codes in the KG lacks level, isPrimary, and ancestor codes. And, some of the codes are no longer valid in the latest NACE Rev. 2.1 version.

In Rev 2.1 of the NACE codes:

• NACE codes are no longer strictly 4-digit numbers.
• NACE codes are structured into:
  Sections (letters A–V, level 1) →
  Divisions (2 digits, level 2) →
  Groups (3 digits with dot, level 3) →
  Classes (4 digits with dot, level 4).
• Codes are unique. For example, both 28 and 29 share the same parent C, but it is not repeated after 28 because it already appears earlier in the primary chain.
• There is at most one primary code per level.
• Primary codes are listed before non-primaries.
• Specific codes (e.g., 29.10) are listed before broader ones (e.g., 29.1).

For a comparison of the existing code format versus the new Rev 2.1 format, see below.

CURRENT DATA FORMAT: NACE codes - Organization.naceClassification

Volkswagen's current NACE classification in the KG appears as the following

[  
  {  
    "code": "2910",  
    "isPrimary": false,  
    "name": "Manufacture of motor vehicles"  
  },  
  {  
    "code": "7022",  
    "isPrimary": false,  
    "name": "Business and other management consultancy activities"  
  },  
  {  
    "code": "7021",  
    "isPrimary": false,  
    "name": "Public relations and communication activities"  
  }  
]

Issues with this data:

• Missing level information
• All codes are marked as non-primary
• Parent codes are missing
• Codes 7022 and 7021 are no longer valid in the Rev. 2.1 version of the codes
• Volkswagen should not be classified under those industries in 7022 and 7021.

NEW DATA FORMAT: NACE Rev 2.1 Codes

When the updates deploy, Volkswagen's Organization.naceClassification NACE codes will look like this:

[  
  {  
    "code": "29.10",  
    "level": 4,  
    "isPrimary": true,  
    "name": "Manufacture of motor vehicles",  
    "version": "Rev 2.1"  
  },  
  {  
    "code": "29.1",  
    "level": 3,  
    "isPrimary": true,  
    "name": "Manufacture of motor vehicles",  
    "version": "Rev 2.1"  
  },  
  {  
    "code": "29",  
    "level": 2,  
    "isPrimary": true,  
    "name": "Manufacture of motor vehicles, trailers and semi-trailers",  
    "version": "Rev 2.1"  
  },  
  {  
    "code": "C",  
    "level": 1,  
    "isPrimary": true,  
    "name": "MANUFACTURING",  
    "version": "Rev 2.1"  
  },  
  {  
    "code": "28.11",  
    "level": 4,  
    "isPrimary": false,  
    "name": "Manufacture of engines and turbines, except aircraft, vehicle and cycle engines",  
    "version": "Rev 2.1"  
  },  
  {  
    "code": "28.1",  
    "level": 3,  
    "isPrimary": false,  
    "name": "Manufacture of general-purpose machinery",  
    "version": "Rev 2.1"  
  },  
  {  
    "code": "28",  
    "level": 2,  
    "isPrimary": false,  
    "name": "Manufacture of machinery and equipment n.e.c.",  
    "version": "Rev 2.1"  
  }  
]