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Topograph uses AI to standardize the activity sector of the companies you query. We map local classification codes to international standards through a two-step process.

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Mapping Process

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Step 1: Local Classifications → ISIC Rev.4

We use AI to map local activity codes to ISIC Rev.4, prioritizing precision over recall. Priority order:
  1. Local Classification Codes (Primary source)
    • Country-specific codes (e.g., ATECO for Italy)
    • Sector-specific codes (e.g., SIC, RAE, SAE)
    • Official business register classifications
  2. Activity Descriptions (Fallback source)
    • Free-text activity descriptions when no local codes are available
Process: AI analyzes the activity code and description together to find the most semantically similar ISIC code. We favour accurate matches over complete coverage.

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Step 2: ISIC Rev.4 → NACE Rev.2.1

Formal mapping from ISIC to NACE using a comprehensive mapping table.
  • 766 ISIC codes mapped to corresponding NACE codes
  • 100% coverage of ISIC Rev.4 classification
  • AI-generated mappings with very high confidence scores

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Example: Italy

{
  "input": {
    "classification": "ATECO2025",
    "code": "01.11",
    "description": "Coltivazione di cereali (escluso il riso)"
  },
  "step1_result": {
    "code": "0111",
    "description": "Growing of cereals (except rice)..."
  },
  "step2_result": {
    "code": "01.11",
    "description": "NACE 01.11 - AI mapped from ISIC 0111"
  }
}

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API Response

{
  "activities": {
    "ATECO2025": [
      {
        "code": "01.11",
        "description": "Coltivazione di cereali (escluso il riso)",
        "isAIInferred": false
      }
    ],
    "ISIC": [
      {
        "code": "0111",
        "description": "Growing of cereals (except rice)...",
        "isAIInferred": true
      }
    ],
    "NACE": [
      {
        "code": "01.11",
        "description": "NACE 01.11 - AI mapped from ISIC 0111",
        "isAIInferred": true
      }
    ]
  }
}