diff --git a/back/src/modules/apis/apis.service.ts b/back/src/modules/apis/apis.service.ts
index 7cfb4d1..c6d1a13 100644
--- a/back/src/modules/apis/apis.service.ts
+++ b/back/src/modules/apis/apis.service.ts
@@ -41,7 +41,7 @@ export class ApisService {
       description: dto.description ?? null,
       type: dto.type,
       yamlContent: dto.yamlContent,
-      status: 'PENDING',
+      status: dto.yamlContent ? 'PENDING' : 'NO_YAML',
       categoryId: dto.categoryId ?? null,
       isCurrent,
       contactFunctionalName: dto.contactFunctionalName,
diff --git a/back/src/modules/uploads/uploads.controller.ts b/back/src/modules/uploads/uploads.controller.ts
index 1d80489..fdbf5b0 100644
--- a/back/src/modules/uploads/uploads.controller.ts
+++ b/back/src/modules/uploads/uploads.controller.ts
@@ -205,7 +205,6 @@ export class UploadsController {
       contactTechnicalEmail: string;
     },
   ) {
-    if (!files || files.length === 0) throw new BadRequestException('YAML file is required');
     if (!body.name) throw new BadRequestException('name is required');
     if (!body.convention) throw new BadRequestException('convention is required');
 
@@ -218,7 +217,10 @@ export class UploadsController {
     let yamlContent: string;
     let detectedType: ApiType | null = null;
 
-    if (files.length === 1) {
+    if (!files || files.length === 0) {
+      /* Pas de fichier : entrée créée sans YAML (YAML pourra être ajouté plus tard) */
+      yamlContent = '';
+    } else if (files.length === 1) {
       /* Cas simple : un seul fichier */
       yamlContent = fs.readFileSync(files[0].path, 'utf-8');
 
@@ -260,8 +262,10 @@ export class UploadsController {
       contactTechnicalEmail: body.contactTechnicalEmail,
     });
 
-    /* Fire-and-forget : génération asynchrone */
-    this.docsService.generate(entry.id).catch(console.error);
+    /* Fire-and-forget : génération asynchrone (seulement si YAML fourni) */
+    if (yamlContent) {
+      this.docsService.generate(entry.id).catch(console.error);
+    }
 
     return entry;
   }
diff --git a/front-public/src/app/pages/api-detail/api-detail.component.ts b/front-public/src/app/pages/api-detail/api-detail.component.ts
index d2a18a2..563d3e6 100644
--- a/front-public/src/app/pages/api-detail/api-detail.component.ts
+++ b/front-public/src/app/pages/api-detail/api-detail.component.ts
@@ -596,8 +596,17 @@ export class ApiDetailComponent implements OnInit, OnDestroy {
   onDelete() {
     if (!confirm('Supprimer cette API ?')) return;
     this.deleting.set(true);
+    /* Calculer la cible de redirection avant la suppression */
+    const otherVersions = this.versions().filter((v) => v.id !== this.id);
+    const redirectTarget = otherVersions.find((v) => v.isCurrent) ?? otherVersions[0];
     this.apiService.delete(this.id).subscribe({
-      next: () => this.router.navigate(['/catalog']),
+      next: () => {
+        if (redirectTarget) {
+          this.router.navigate(['/catalog', redirectTarget.id]);
+        } else {
+          this.router.navigate(this.backUrl());
+        }
+      },
       error: () => this.deleting.set(false),
     });
   }
@@ -605,12 +614,14 @@ export class ApiDetailComponent implements OnInit, OnDestroy {
   badgeClass(status: string): string {
     if (status === 'GENERATED') return 'fr-badge fr-badge--success';
     if (status === 'ERROR') return 'fr-badge fr-badge--error';
+    if (status === 'NO_YAML') return 'fr-badge fr-badge--warning';
     return 'fr-badge fr-badge--info';
   }
 
   statusLabel(status: string): string {
     if (status === 'GENERATED') return 'Générée';
     if (status === 'ERROR') return 'Erreur';
+    if (status === 'NO_YAML') return 'Sans fichier';
     return 'En attente';
   }
 
diff --git a/front-public/src/app/pages/catalog/catalog.component.ts b/front-public/src/app/pages/catalog/catalog.component.ts
index 10d1792..5d64934 100644
--- a/front-public/src/app/pages/catalog/catalog.component.ts
+++ b/front-public/src/app/pages/catalog/catalog.component.ts
@@ -208,6 +208,7 @@ export class CatalogComponent implements OnInit {
     const base = 'fr-badge';
     if (status === 'GENERATED') return `${base} fr-badge--success`;
     if (status === 'ERROR') return `${base} fr-badge--error`;
+    if (status === 'NO_YAML') return `${base} fr-badge--warning`;
     return `${base} fr-badge--info`;
   }
 
diff --git a/front-public/src/app/pages/upload/upload.component.ts b/front-public/src/app/pages/upload/upload.component.ts
index 9359e8e..8bf8eda 100644
--- a/front-public/src/app/pages/upload/upload.component.ts
+++ b/front-public/src/app/pages/upload/upload.component.ts
@@ -393,7 +393,9 @@ import { ApiEntry, Category, API_CONVENTION_LABELS, ApiConvention } from '@datac
                 <div class="fr-col-12 fr-col-md-6">
                   <dt class="fr-text--bold">Fichier{{ selectedFiles().length > 1 ? 's' : '' }}</dt>
                   <dd>
-                    @if (selectedFiles().length === 1) {
+                    @if (selectedFiles().length === 0) {
+                      <span class="fr-badge fr-badge--warning fr-badge--sm">Aucun fichier</span>
+                    } @else if (selectedFiles().length === 1) {
                       {{ selectedFiles()[0].name }}
                     } @else {
                       @for (f of selectedFiles(); track f.name) {
@@ -568,7 +570,7 @@ export class UploadComponent implements OnInit {
     return !!(this.metaForm.get('versionPatch')?.invalid && this.metaForm.get('versionPatch')?.touched);
   }
   canProceedFromStep1 = computed(() => {
-    if (this.selectedFiles().length === 0) return false;
+    if (this.selectedFiles().length === 0) return true;   // fichier optionnel
     if (this.validating()) return false;
     return this.validationDone() && this.validationErrors().length === 0;
   });
@@ -627,6 +629,7 @@ export class UploadComponent implements OnInit {
 
   onFileChange(event: Event) {
     this.fileError.set(null);
+    this.uploadError.set(null);
     this.detectedType.set(null);
     this.detectedMainFilename.set(null);
     this.validationErrors.set([]);
@@ -725,7 +728,12 @@ export class UploadComponent implements OnInit {
   onSubmit() {
     const files = this.selectedFiles();
     this.metaForm.markAllAsTouched();
-    if (files.length === 0 || this.metaForm.invalid) return;
+    if (this.metaForm.invalid) {
+      /* Naviguer vers l'étape avec les erreurs pour les rendre visibles */
+      const infoInvalid = this.INFO_FIELDS.some((f) => this.metaForm.get(f)?.invalid);
+      this.step.set(infoInvalid ? 2 : 3);
+      return;
+    }
 
     this.uploading.set(true);
     this.uploadError.set(null);
diff --git a/shared/src/types/api-entry.types.ts b/shared/src/types/api-entry.types.ts
index a9792f1..27ee89c 100644
--- a/shared/src/types/api-entry.types.ts
+++ b/shared/src/types/api-entry.types.ts
@@ -1,6 +1,6 @@
 export type ApiType = 'ASYNCAPI' | 'OPENAPI';
 
-export type ApiStatus = 'PENDING' | 'GENERATED' | 'ERROR';
+export type ApiStatus = 'PENDING' | 'GENERATED' | 'ERROR' | 'NO_YAML';
 
 export type ApiConvention = 'CONSULTER' | 'ENREGISTRER' | 'ETRE_NOTIFIE';