diff --git a/src/app/modules/colors/components/mix-editor/mix-editor.component.ts b/src/app/modules/colors/components/mix-editor/mix-editor.component.ts
index 6420169..cab63ae 100644
--- a/src/app/modules/colors/components/mix-editor/mix-editor.component.ts
+++ b/src/app/modules/colors/components/mix-editor/mix-editor.component.ts
@@ -1,6 +1,6 @@
 import {Component, EventEmitter, Input, Output, ViewChild} from '@angular/core'
 import {Mix, MixMaterial, Recipe} from '../../../shared/model/recipe.model'
-import {SubscribingComponent} from '../../../shared/components/subscribing.component'
+import {ErrorHandlingComponent} from '../../../shared/components/subscribing.component'
 import {MixService} from '../../services/mix.service'
 import {Observable} from 'rxjs'
 import {RecipeService} from '../../services/recipe.service'
@@ -23,7 +23,7 @@ import {MatSelect} from '@angular/material/select'
   templateUrl: './mix-editor.component.html',
   styleUrls: ['./mix-editor.component.sass']
 })
-export class MixEditorComponent extends SubscribingComponent {
+export class MixEditorComponent extends ErrorHandlingComponent {
   @ViewChild('mixTable') mixTable: MatTable<MixMaterial>
   @ViewChild('deleteConfirmBox') deleteConfirmBox: ConfirmBoxComponent
 
@@ -47,6 +47,16 @@ export class MixEditorComponent extends SubscribingComponent {
   hoveredMixMaterial: MixMaterial | null
   columns = ['position', 'material', 'quantity', 'units', 'buttonRemove']
 
+  deleting = false
+  handledErrorModels = [{
+    filter: error => error.status === 409 && !this.deleting,
+    messageProducer: error => `Un mélange avec le nom '${error.id}' existe déjà dans cette recette`
+  }, {
+    filter: error => error.error.status === 409 && this.deleting,
+    consumer: () => this.deleting = false,
+    messageProducer: () => 'Ce mélange est utilisé par un ou plusieurs autres mélanges'
+  }]
+
   constructor(
     private mixService: MixService,
     private recipeService: RecipeService,
@@ -116,6 +126,7 @@ export class MixEditorComponent extends SubscribingComponent {
   }
 
   delete() {
+    this.deleting = true
     this.subscribeAndNavigate(this.mixService.delete(this.mixId), `/color/edit/${this.recipeId}`)
   }
 
diff --git a/src/app/modules/company/pages/edit/edit.component.ts b/src/app/modules/company/pages/edit/edit.component.ts
index 2ea1b35..5037b3e 100644
--- a/src/app/modules/company/pages/edit/edit.component.ts
+++ b/src/app/modules/company/pages/edit/edit.component.ts
@@ -2,7 +2,6 @@ import {Component} from '@angular/core'
 import {ErrorHandlingComponent} from '../../../shared/components/subscribing.component'
 import {Company} from '../../../shared/model/company.model'
 import {FormField} from '../../../shared/components/entity-add/entity-add.component'
-import {Validators} from '@angular/forms'
 import {CompanyService} from '../../service/company.service'
 import {ActivatedRoute, Router} from '@angular/router'
 import {ErrorModel, ErrorService} from '../../../shared/service/error.service'
@@ -27,9 +26,13 @@ export class EditComponent extends ErrorHandlingComponent {
     }
   ]
 
+  deleting = false
   handledErrorModels: ErrorModel[] = [{
-    filter: error => error.status === 409,
+    filter: error => error.status === 409 && !this.deleting,
     messageProducer: error => `Une bannière avec le nom '${error.error.id}' existe déjà`
+  }, {
+    filter: error => error.status === 409 && this.deleting,
+    messageProducer: () => 'Cette bannière est utilisée par une ou plusieurs recettes'
   }]
 
   constructor(
@@ -61,6 +64,7 @@ export class EditComponent extends ErrorHandlingComponent {
   }
 
   delete() {
+    this.deleting = true
     this.subscribeAndNavigate(
       this.companyService.delete(this.company.id),
       '/catalog/company/list'
diff --git a/src/app/modules/material-type/pages/edit/edit.component.ts b/src/app/modules/material-type/pages/edit/edit.component.ts
index 96a642c..73e8a69 100644
--- a/src/app/modules/material-type/pages/edit/edit.component.ts
+++ b/src/app/modules/material-type/pages/edit/edit.component.ts
@@ -41,14 +41,19 @@ export class EditComponent extends ErrorHandlingComponent {
       ]
     }
   ]
-  submittedValues: any | null
 
+  deleting = false
+  submittedValues: any | null
   handledErrorModels: ErrorModel[] = [{
-    filter: error => error.status === 409 && error.error.id === this.submittedValues.name,
+    filter: error => error.status === 409 && !this.deleting && error.error.id === this.submittedValues.name,
     messageProducer: error => `Un type de produit avec le nom '${error.error.id}' existe déjà`
   }, {
-    filter: error => error.status === 409 && error.error.id === this.submittedValues.prefix,
+    filter: error => error.status === 409 && !this.deleting && error.error.id === this.submittedValues.prefix,
     messageProducer: error => `Un type de produit avec le préfixe '${error.error.id}' existe déjà`
+  }, {
+    filter: error => error.status === 409 && this.deleting,
+    consumer: () => this.deleting = true,
+    messageProducer: () => 'Ce type de produit est utilisé dans une ou plusieurs recettes ou produits'
   }]
 
   constructor(
@@ -81,6 +86,7 @@ export class EditComponent extends ErrorHandlingComponent {
   }
 
   delete() {
+    this.deleting = true
     this.subscribeAndNavigate(
       this.materialTypeService.delete(this.materialType.id),
       '/catalog/materialtype/list'
diff --git a/src/app/modules/material/pages/edit/edit.component.ts b/src/app/modules/material/pages/edit/edit.component.ts
index c8078aa..236075d 100644
--- a/src/app/modules/material/pages/edit/edit.component.ts
+++ b/src/app/modules/material/pages/edit/edit.component.ts
@@ -11,113 +11,119 @@ import {environment} from '../../../../../environments/environment'
 import {ErrorModel, ErrorService} from '../../../shared/service/error.service'
 
 @Component({
-  selector: 'cre-edit',
-  templateUrl: './edit.component.html',
-  styleUrls: ['./edit.component.sass']
+    selector: 'cre-edit',
+    templateUrl: './edit.component.html',
+    styleUrls: ['./edit.component.sass']
 })
 export class EditComponent extends ErrorHandlingComponent {
-  @ViewChild('simdutTemplate', {static: true}) simdutTemplateRef
+    @ViewChild('simdutTemplate', {static: true}) simdutTemplateRef
 
-  material: Material | null
-  formFields: FormField[] = [
-    {
-      name: 'name',
-      label: 'Code',
-      icon: 'form-textbox',
-      type: 'text',
-      required: true,
-      errorMessages: [
-        {conditionFn: (errors) => errors.required, message: 'Un code est requis'}
-      ]
-    },
-    {
-      name: 'inventoryQuantity',
-      label: 'Quantité en inventaire',
-      icon: 'beaker-outline',
-      type: 'number',
-      required: true,
-      validator: Validators.min(0),
-      errorMessages: [
-        {conditionFn: errors => errors.required, message: 'Une quantité en inventaire est requise'},
-        {conditionFn: errors => errors.min, message: 'La quantité doit être supérieure ou égale à 0'}
-      ],
-      step: '0.01'
-    },
-    {
-      name: 'materialType',
-      label: 'Type de produit',
-      icon: 'shape-outline',
-      type: 'select',
-      required: true,
-      errorMessages: [
-        {conditionFn: errors => errors.required, message: 'Un type de produit est requis'}
-      ],
-      valueFn: material => material.materialType.id,
-      options$: this.materialTypeService.all.pipe(map(types => types.map(t => {
-        return {value: t.id, label: t.name}
-      })))
-    },
-    {
-      name: 'simdutFile',
-      label: 'Fiche signalitique',
-      icon: 'file-outline',
-      type: 'file',
-      fileType: 'application/pdf'
+    material: Material | null
+    formFields: FormField[] = [
+        {
+            name: 'name',
+            label: 'Code',
+            icon: 'form-textbox',
+            type: 'text',
+            required: true,
+            errorMessages: [
+                {conditionFn: (errors) => errors.required, message: 'Un code est requis'}
+            ]
+        },
+        {
+            name: 'inventoryQuantity',
+            label: 'Quantité en inventaire',
+            icon: 'beaker-outline',
+            type: 'number',
+            required: true,
+            validator: Validators.min(0),
+            errorMessages: [
+                {conditionFn: errors => errors.required, message: 'Une quantité en inventaire est requise'},
+                {conditionFn: errors => errors.min, message: 'La quantité doit être supérieure ou égale à 0'}
+            ],
+            step: '0.01'
+        },
+        {
+            name: 'materialType',
+            label: 'Type de produit',
+            icon: 'shape-outline',
+            type: 'select',
+            required: true,
+            errorMessages: [
+                {conditionFn: errors => errors.required, message: 'Un type de produit est requis'}
+            ],
+            valueFn: material => material.materialType.id,
+            options$: this.materialTypeService.all.pipe(map(types => types.map(t => {
+                return {value: t.id, label: t.name}
+            })))
+        },
+        {
+            name: 'simdutFile',
+            label: 'Fiche signalitique',
+            icon: 'file-outline',
+            type: 'file',
+            fileType: 'application/pdf'
+        }
+    ]
+    hasSimdut = false
+    selectedSimdutFile: File | null
+
+    deleting = false
+    handledErrorModels: ErrorModel[] = [{
+        filter: error => error.status === 409 && !this.deleting,
+        messageProducer: error => `Un produit avec le nom '${error.error.id}' existe déjà`
+    }, {
+        filter: error => error.status === 409 && this.deleting,
+        consumer: () => this.deleting = false,
+        messageProducer: () => `Ce produit est utilisé dans une plusieurs recettes`
+    }]
+
+    constructor(
+        private materialService: MaterialService,
+        private materialTypeService: MaterialTypeService,
+        errorService: ErrorService,
+        router: Router,
+        activatedRoute: ActivatedRoute
+    ) {
+        super(errorService, activatedRoute, router)
     }
-  ]
-  hasSimdut = false
-  selectedSimdutFile: File | null
 
-  handledErrorModels: ErrorModel[] = [{
-    filter: error => error.status === 409,
-    messageProducer: error => `Un produit avec le nom '${error.error.id}' existe déjà`
-  }]
+    ngOnInit() {
+        super.ngOnInit()
 
-  constructor(
-    private materialService: MaterialService,
-    private materialTypeService: MaterialTypeService,
-    errorService: ErrorService,
-    router: Router,
-    activatedRoute: ActivatedRoute
-  ) {
-    super(errorService, activatedRoute, router)
-  }
+        this.formFields[3].template = this.simdutTemplateRef
 
-  ngOnInit() {
-    super.ngOnInit()
+        const id = parseInt(this.activatedRoute.snapshot.paramMap.get('id'))
+        this.subscribeEntityById(
+            this.materialService,
+            id,
+            material => this.material = material,
+            '/catalog/material/list'
+        )
 
-    this.formFields[3].template = this.simdutTemplateRef
+        this.subscribe(
+            this.materialService.hasSimdut(id),
+            b => this.hasSimdut = b
+        )
+    }
 
-    const id = parseInt(this.activatedRoute.snapshot.paramMap.get('id'))
-    this.subscribeEntityById(
-      this.materialService,
-      id,
-      material => this.material = material,
-      '/catalog/material/list'
-    )
+    submit(values) {
+        this.subscribeAndNavigate(
+            this.materialService.update(this.material.id, values.name, values.inventoryQuantity, values.materialType, this.selectedSimdutFile),
+            '/catalog/material/list'
+        )
+    }
 
-    this.subscribe(
-      this.materialService.hasSimdut(id),
-      b => this.hasSimdut = b
-    )
-  }
+    delete() {
+        this.deleting = true
+        this.subscribeAndNavigate(
+            this.materialService.delete(this.material.id),
+            '/catalog/material/list'
+        )
+    }
 
-  submit(values) {
-    this.subscribeAndNavigate(
-      this.materialService.update(this.material.id, values.name, values.inventoryQuantity, values.materialType, this.selectedSimdutFile),
-      '/catalog/material/list'
-    )
-  }
-
-  delete() {
-    this.subscribeAndNavigate(
-      this.materialService.delete(this.material.id),
-      '/catalog/material/list'
-    )
-  }
-
-  openSimdutUrl() {
-    const simdutUrl = environment.apiUrl + `/material/${this.material.id}/simdut`
-    window.open(simdutUrl, '_blank')
-  }
+    openSimdutUrl() {
+        const simdutUrl = environment.apiUrl + `/material/${this.material.id}/simdut`
+        window.open(simdutUrl, '_blank')
+    }
 }