Breaking Change: CRM API Write Validation Enforcement Starting with the 2026-09 API Version
Starting with the /2026-09/ API version shipping on September 8, 2026, HubSpot will enforce admin-configured validation rules on all CRM API write paths. If your integration creates or updates CRM rec…
Changed 1
- CRM API write paths will enforce admin-configured validation rules starting with the /2026-09/ API version on September 8, 2026