HubSpot for Developers — Breaking Change: Pipeline and pipeline stage delete endpoints will validate references by default starting with the 2026-09 API version

Breaking Change: Pipeline and pipeline stage delete endpoints will validate references by default starting with the 2026-09 API version

7/23/2026 Edit - The post has been updated to include the Deal object specific validateDealStageUsagesBeforeDelete query parameter. Availability: This is a breaking change for the next GA date-based A…

Added 1
  • Deal object now supports validateDealStageUsagesBeforeDelete query parameter
Changed 1
  • Pipeline and pipeline stage delete endpoints will validate references by default starting with the 2026-09 API version
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Upgraded? How did it go?

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