Bug - IS_KNOWN() doesn't work in Report Formula Fields

HubSpot Ideas
2

Hey Jeremy, doing a check internally, there does seem to be an issue with the

IS_KNOWN

function in Formula Fields currently. The error message is inaccurate and the team is aware of this. They’re working on reworking the Formula Fields editing experience for the custom report builder and fix the underlying issue for this.

In the meantime, the workaround is to replace the

IS_KNOWN

function with

!= NULL

, which should work to clear the error messaging. Hope this helps!