It is possible to change the message for a required field ?

Hello, i'm using the french version of JOTFORM. It is possible to change the message for a required field ?

Now it is write "this field is requiered", and in french we say "ce champ est obligatoire" or "réponse obligatoire".

Thank you for your help.

Yes, you can change it in the Form Warnings page of the Form Settings page. 

You can also make your forms multi-lingual, here's a guide: https://www.jotform.com/help/298-How-to-Make-Your-Forms-Multilingual

I hope this information helps. Please contact us again if you need assistance.