Hi. We are using segment.com integration where we want to send our company and user (contacts) data to hubspot. Contact data seem to work ok, but we have some issues with the companies to be created.
I encountered this error when one of the properties in Hubspot was some kind of enumerable (checkboxes for examples). Those properties requires a set of predefined values to be defined. If the value you send from Segment is not in this predefined set, you get this error.
I never tried the group call though, so it might be somethings completely different.
Normally, there is a panel in Segment where you can get more details on the error I think (get the actuel response payload of Hubspot). It might be helpful to get the actual reason of the error.