UNECE Recommendation 20 Level Categories

Version 1.0.0 • Published May 07, 2026 00:00 UTC • by United Nations Economic Commission for Europe (UNECE), RefPack

Level and category classification codes used in UNECE Recommendation 20 for units of measure. Defines normative, informative, and commonly used unit categories including standard multiples and equivalent units.

Download v1.0.0 (.zip)

UNECE Recommendation 20 Level Categories

Overview

Level and category classification codes used in UNECE Recommendation 20 for units of measure. Defines normative, informative, and commonly used unit categories including standard multiples and equivalent units.

Dataset Structure

Field Type Description Required
LevelAndCategory string Yes
Description string Yes

Sample Entries

LevelAndCategory Description
1 Normative
1S Standard Multiples
1M Commonly Used Multiples
2 Normative Equivalent
2S Normative Equivalent Multiples

Usage Scenarios

  • Lookup table for the LevelAndCategory field in units-of-measure
  • Unit classification and filtering in measurement systems
  • Data validation for UNECE Recommendation 20 compliant systems

Data Integrity

  • The LevelAndCategory field serves as the unique identifier.
  • Required fields: LevelAndCategory, Description
  • Additional properties are disallowed.

Metadata & Versioning

  • Dataset ID: unece_rec20_levels
  • Version: 1.0.0
  • Created (UTC): 2026-05-07T00:00:00Z
  • Title: UNECE Recommendation 20 Level Categories
  • Authors: United Nations Economic Commission for Europe (UNECE), RefPack
  • License: Public Domain
  • Tags: unece, recommendation 20, levels, categories, units, measurement, classification, cat005