Issues

• Make nomenclature pandas 3.x compatible

  IAMconsortium/nomenclature#621 · Filter by author dc-almeida opened on Oct 13, 2026
  

• Allow setting CountryProcessor region hierarchies in nomenclature.yaml

  enhancement
  IAMconsortium/nomenclature#617 · Filter by author dc-almeida opened on Sep 18, 2026
  

• CLI command list-missing-variables does not account for external repos

  IAMconsortium/nomenclature#614 · Filter by author dc-almeida opened on Sep 7, 2026
  

• Region processing seems inefficient for large datasets

  bug
  IAMconsortium/nomenclature#613 · Filter by author dc-almeida opened on Sep 4, 2026
  1

• Add a from_codelist constructor to MetaValidator

  enhancement
  Feature

  IAMconsortium/nomenclature#611 · Filter by author dc-almeida opened on Aug 31, 2026
  

• Reconsider usage of mutable data types in nomenclature

  IAMconsortium/nomenclature#609 · Filter by author phackstock opened on Aug 20, 2026

• Tag replacement memory consumption is rather high

  bug
  IAMconsortium/nomenclature#607 · Filter by author phackstock opened on Aug 13, 2026
  2

  

• Refactor RequiredDataValidator to harmonise with DataValidator

  IAMconsortium/nomenclature#603 · Filter by author dc-almeida opened on Jul 21, 2026

• Rework the **MetaValidator** class

  enhancement
  Feature

  IAMconsortium/nomenclature#597 · Filter by author danielhuppmann opened on Jun 30, 2026
  7

  

• Add minimum country criterion for CountryProcessor aggregation

  IAMconsortium/nomenclature#593 · Filter by author dc-almeida opened on Jun 15, 2026

• Streamline reading of mapping file in RegionProcessor.from_directory

  IAMconsortium/nomenclature#586 · Filter by author phackstock opened on May 28, 2026
  

• Single region common region aggregation skip seems currently broken

  bug
  IAMconsortium/nomenclature#581 · Filter by author phackstock opened on Apr 13, 2026
  

• Check pandas 3.x compatibility

  IAMconsortium/nomenclature#571 · Filter by author phackstock opened on Mar 16, 2026
  

• Introduce NomenclatureError class to be used instead of NoTracebackError

  enhancement
  IAMconsortium/nomenclature#560 · Filter by author phackstock opened on Feb 18, 2026
  

• Use generic type in CodeLists to fix typing issue

  bug
  IAMconsortium/nomenclature#554 · Filter by author phackstock opened on Feb 5, 2026
  

• Rework documentation

  documentation
  IAMconsortium/nomenclature#553 · Filter by author danielhuppmann opened on Feb 5, 2026
  

• Refactor RegionProcessor.apply for memory usage, performance and clarity

  refactor
  IAMconsortium/nomenclature#534 · Filter by author phackstock opened on Nov 4, 2025

• Clean up logging from region-aggregation

  refactor
  IAMconsortium/nomenclature#523 · Filter by author danielhuppmann opened on Sep 23, 2025
  

• Add __all__ to __init__.py to appease code analyzers

  IAMconsortium/nomenclature#518 · Filter by author phackstock opened on Sep 17, 2025

• All workflows would need the dynamic versioning plugin to correctly display the version number

  IAMconsortium/nomenclature#510 · Filter by author phackstock opened on Jul 24, 2025

• Add documentation for datetime validation

  documentation
  IAMconsortium/nomenclature#502 · Filter by author dc-almeida opened on Jul 17, 2025
  

• Add code coverage

  enhancement
  IAMconsortium/nomenclature#488 · Filter by author dc-almeida opened on Mar 26, 2025
  

• Strictly enforce folder naming conventions

  enhancement
  IAMconsortium/nomenclature#475 · Filter by author phackstock opened on Feb 17, 2025
  2

  

• Refactor DataValidator

  refactor
  IAMconsortium/nomenclature#469 · Filter by author phackstock opened on Jan 30, 2025

• Add context manager for Error collector

  enhancement
  IAMconsortium/nomenclature#468 · Filter by author phackstock opened on Jan 30, 2025