Create or update a group of contacts


We’ve been having problems with creating a group of contacts. We followed instructions here ( and copy pasted example json body, sent request and got 200 OK response but contacts weren’t created.

If we create contacts one by one like here ( everything fine.

Can you help us with a possibility to add the group of contacts?



Hi @data-plum

Are you setting the content-type: application/json header in the request when you’re getting that 200 OK response?


Looks like this help but after request, I get this error. Refreshing didn’t


Everything is functioning correctly now, sorry.

Thant you a lot!