When working on a Drupal site I saw the error message "There is already a translation in this language.". The only solution was to delete the entity and re-create it. Now I spent time to debug that issue and the problem is that Entity Translation module adds a language callback for all entity types which are enabled for entity translation. By default the entity type "node" is enabled for entity translation. The language callback for entity translation enabled entity types is
I cannot figure out why the entity language for my german entity is english but it has an english translation. Do you know sth. about this issue?