* `toobig`: uploaded file was too big
* `notation`: uploaded file was not an image
* `nochange`: when trying to update a feature, there is nothing to update (ie: no field of the feature has changed)
* `toobig`: uploaded file was too big
* `notation`: uploaded file was not an image
* `nochange`: when trying to update a feature, there is nothing to update (ie: no field of the feature has changed)