How to retrieve translations for form questions/properties using JotForm API?

When dealing with a form that supports multiple languages, the "/form/{id}/questions" endpoint returns questions text for the form's primary language only. Is there a way to retrieve the translations for the form's questions? 

Also is there a way to translate form warnings/validation to support multiple languages? 

Thanks

Unfortunately, it is not possible to get the text of the questions for another language through the JotForm API other than the text that is in the form builder.

Also is there a way to translate form warnings/validation to support multiple languages? 

Yes, you can translate the warnings and validation messages of the form from the form settings. Just click the Form Warnings tab near the Field Translations.