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Version 2026-09 is deprecated and stops working on October 1, 2027. We recommend 2026-10 for new integrations.
These pages describe the API exactly as it was before date-based versioning. They stay available for integrations that still send Sajn-Version: 2026-09, or whose organization default is 2026-09. To move your integration, see Upgrading to 2026-10. For how versions work, see API versioning.