BC Observatoryunofficial, made by waldo
code change · fixAL Developmentofficial - Microsoftreviewed - checked by Opus

#139 knowledge(breaking-changes): adding a parameter to an event publisher is not a signature break

The breaking-changes knowledge article now clarifies that adding a parameter to an event publisher is not a breaking change, since event subscribers bind by parameter name, not position. This aligns the article with the existing events knowledge and removes a false positive report.

Open in Claude139.mdPull request #139

Pull request · merged into main on 2026-09-02 by gggdttt · 1 file (+4 -2), 1 AL · fix · tier official · reviewed (checked by Opus)

What changed

  • Event subscribers bind to publishers by parameter name, not by position
  • Detection now skips event publishers whose only change is an added parameter and calls such reports false positives
  • Removals, retypes, renames and var flips on event publishers are still treated as breaking
  • Cross-references point to the events articles, including the cases where publisher access or adding IsHandled matters
  • Added the integration-event keyword

AL objects touched

  • microsoft/knowledge/breaking-changes/do-not-change-published-procedure-signatures.md: modified, not in the BC? snapshot

Context

  • Systems: development
  • From the description: “AL binds an event subscriber to its publisher by parameter name, not by position.”

Source: metadata of a merged pull request in microsoft/BCQuality (bcquality): title, labels, changed paths and counts, with a summary in our words. No source text and no description beyond one short quote (D10, D61).