We previously announced that HubSpot would implement enhanced validations for non-string property values to improve data integrity and user experience by prohibiting leading or trailing whitespace characters, including invisible unicode characters from property values. However, we have paused this update indefinitely due to customer feedback and impact. No breaking change will go into effect on our originally stated date of November 10, 2025.
All non-string properties will continue to work as expected. If you have implemented any code changes to address this breaking change, your code will not be impacted, and should continue to function as normal.
Questions or concerns? Please let us know in the developer forums.