Hi, Guillaume 

This error can occur when you attempt to edit a draft with an outdated, or non-existent, version param in the request body. 

To successfully update the draft, you will want to use the version received in the payload from the request to the Create Draft endpoint. 

Best, 
Justin

I just tested it and it is correct. You should update the documentation of this endpoint to explain it: https://dev.frontapp.com/reference/edit-draft

For the property `version`, you should add something like this text: “Version of the draft. It should be a valid version id or else you’ll get the following error `There is a new version of this draft`. You can find the version id of a draft in the response of a create draft or in the get list of draft.”