Hi !
When I try to upload a JSON file it appears “bad request”.
Does anyone know the possible reasons?
Thanks 
Hi Matias,
I assume you mean a Survey JSON (when importing it). If that’s the case, please check this section on our Learn and see if you can diagnose possible issues with your JSON file. If your JSON is valid but you still get an error, please share a screenshot from the page (including the error).
Best regards,
Mojtaba