diff --git a/front/public/locales/en/operationalStudies/importTrainSchedule.json b/front/public/locales/en/operationalStudies/importTrainSchedule.json
index 53c01458370..b7876f2024e 100644
--- a/front/public/locales/en/operationalStudies/importTrainSchedule.json
+++ b/front/public/locales/en/operationalStudies/importTrainSchedule.json
@@ -6,6 +6,7 @@
   "endTime": "END",
   "errorMessages": {
     "error": "An error has occurred",
+    "errorImport": "Data conversion failed",
     "errorNoDate": "You must enter a date.",
     "errorNoFrom": "You must fill in an origin.",
     "errorNoTo": "You must fill in a destination.",
diff --git a/front/public/locales/fr/operationalStudies/importTrainSchedule.json b/front/public/locales/fr/operationalStudies/importTrainSchedule.json
index cb0d20b389c..8958eb4616d 100644
--- a/front/public/locales/fr/operationalStudies/importTrainSchedule.json
+++ b/front/public/locales/fr/operationalStudies/importTrainSchedule.json
@@ -6,6 +6,7 @@
   "endTime": "FIN",
   "errorMessages": {
     "error": "Une erreur est survenue",
+    "errorImport": "Impossible de convertir les données en TrainSchedule",
     "errorNoDate": "Vous devez renseigner une date.",
     "errorNoFrom": "Vous devez renseigner une origine.",
     "errorNoTo": "Vous devez renseigner une destination.",
diff --git a/front/src/applications/operationalStudies/components/ImportTrainSchedule/ImportTrainScheduleConfig.tsx b/front/src/applications/operationalStudies/components/ImportTrainSchedule/ImportTrainScheduleConfig.tsx
index 7386a024a8f..e8363764374 100644
--- a/front/src/applications/operationalStudies/components/ImportTrainSchedule/ImportTrainScheduleConfig.tsx
+++ b/front/src/applications/operationalStudies/components/ImportTrainSchedule/ImportTrainScheduleConfig.tsx
@@ -90,29 +90,22 @@ export default function ImportTrainScheduleConfig({
       ) {
         return true;
       }
-      const hasInvalidteps = trainSchedule.steps.some((step) =>
-        [
-          'arrivalTime',
-          'departureTime',
-          'uic',
-          'yard',
-          'name',
-          'trigram',
-          'latitude',
-          'longitude',
-        ].some((key) => !(key in step))
+      const hasInvalidSteps = trainSchedule.steps.some((step) =>
+        ['arrivalTime', 'departureTime', 'uic', 'name', 'trigram', 'latitude', 'longitude'].some(
+          (key) => !(key in step)
+        )
       );
-      return hasInvalidteps;
+      return hasInvalidSteps;
     });
     if (isInvalidTrainSchedules) {
       dispatch(
         setFailure({
           name: t('errorMessages.error'),
-          message: 'Impossible de convertir les données en TrainSchedule',
+          message: t('errorMessage.errorImport'),
         })
       );
       console.error(
-        'Invalid data format: can not convert response into TrainSchedules. Expected format : { trainNumber: string; rollingStock: string; departureTime: string; arrivalTime: string; departure: string; steps: ({uic: number; yard: string; name: string; trigram: string; latitude: number; longitude: number; arrivalTime: string; departureTime: string; })[]; transilienName?: string; }'
+        'Invalid data format: can not convert response into TrainSchedules. Expected format : { trainNumber: string; rollingStock: string; departureTime: string; arrivalTime: string; departure: string; steps: ({uic: number; yard?: string; name: string; trigram: string; latitude: number; longitude: number; arrivalTime: string; departureTime: string; })[]; transilienName?: string; }'
       );
       return null;
     }