Use the new API error format in CreateFilesProcess

Erwan Rouchet
2026-03-12T15:48:59Z

https://redmine.teklia.com/issues/11464

The new API error format should be implemented on the `CreateFilesProcess` endpoint, and the existing unit tests should be updated.

The [best practices](https://redmine.teklia.com/projects/arkind...

https://redmine.teklia.com/issues/11464

The new API error format should be implemented on the CreateFilesProcess endpoint, and the existing unit tests should be updated.

The best practices have details on how to implement this, including adding error codes to messages so that they do not always use the default code invalid.

This endpoint is used by the frontend and its error handling needs to be updated.