diff --git a/lib/backend/api/api_calls.dart b/lib/backend/api/api_calls.dart
index 29f26a4..5e53122 100644
--- a/lib/backend/api/api_calls.dart
+++ b/lib/backend/api/api_calls.dart
@@ -401,4 +401,159 @@ class ApiCalls {
       return false;
     }
   }
+
+  /// If the requested quantity of the product to be received is greater than
+  /// the quantity actually received,
+  /// a confirmation popup must be displayed.
+  /// The user will then need to perform two actions:
+  /// choose whether or not to create a backorder.
+  /// Therefore, this function must be called to generate this confirmation.
+  /// This function returns the `ID of the backorder` confirmation popup,
+  /// which must be used to perform the next action,
+  /// either with or without a backorder.
+  static Future<int?> createBackorderConfirmation({
+    required int stockPickingId,
+  }) async {
+    try {
+      final response = await dioService.post(
+        path: '/web/dataset/call_kw/stock.picking/button_validate',
+        data: {
+          "jsonrpc": "2.0",
+          "method": "call",
+          "params": {
+            "model": "stock.backorder.confirmation",
+            "method": "create",
+            "args": [
+              {
+                "pick_ids": [
+                  [
+                    6,
+                    0,
+                    [
+                      stockPickingId, // stock picking id
+                    ],
+                  ],
+                ],
+                "backorder_confirmation_line_ids": [
+                  [
+                    0,
+                    0,
+                    {
+                      "picking_id": stockPickingId, // stock picking id
+                      //"to_backorder": false // true = avec reliquat / false = sans reliquat
+                    },
+                  ],
+                ],
+              },
+            ],
+            "kwargs": {},
+          },
+        },
+      );
+      if (response.statusCode == 200) {
+        final data = response.data as Map<String, dynamic>;
+        if (data.containsKey('result')) {
+          return data['result'];
+        } else {
+          return null;
+        }
+      } else {
+        debugPrint('Erreur réseau: ${response.statusCode}');
+        return null;
+      }
+    } catch (e) {
+      debugPrint('Erreur lors de la requête: $e');
+      return null;
+    }
+  }
+
+  static Future<bool> withBackorder({
+    required int stockPickingId,
+    required int createBackorderConfirmationId,
+  }) async {
+    try {
+      final response = await dioService.post(
+        path: '/web/dataset/call_kw/stock.picking/button_validate',
+        data: {
+          "jsonrpc": "2.0",
+          "method": "call",
+          "params": {
+            "model": "stock.backorder.confirmation",
+            "method": "process",
+            "args": [
+              [
+                createBackorderConfirmationId, // id popup backorder confirmation reponse -> create popup reliquat
+              ],
+            ],
+            "kwargs": {
+              "context": {
+                "button_validate_picking_ids": [
+                  stockPickingId, // picking id]
+                ],
+              },
+            },
+          },
+        },
+      );
+      if (response.statusCode == 200) {
+        final data = response.data as Map<String, dynamic>;
+        if (data.containsKey('result')) {
+          return data['result'];
+        } else {
+          return false;
+        }
+      } else {
+        debugPrint('Erreur réseau: ${response.statusCode}');
+        return false;
+      }
+    } catch (e) {
+      debugPrint('Erreur lors de la requête: $e');
+      return false;
+    }
+  }
+
+  static Future<bool> withoutBackorder({
+    required int stockPickingId,
+    required int createBackorderConfirmationId,
+  }) async {
+    try {
+      final response = await dioService.post(
+        path: '/web/dataset/call_kw/stock.picking/button_validate',
+        data: {
+          "jsonrpc": "2.0",
+          "method": "call",
+          "params": {
+            "model": "stock.backorder.confirmation",
+            "method": "process_cancel_backorder",
+            "args": [
+              [
+                createBackorderConfirmationId, // id popup backorder confirmation reponse -> create popup reliquat
+              ],
+            ],
+            "kwargs": {
+              "context": {
+                "button_validate_picking_ids": [
+                  stockPickingId, // stock picking id
+                ],
+              },
+            },
+          },
+        },
+      );
+      if (response.statusCode == 200) {
+        final data = response.data as Map<String, dynamic>;
+        if (data.containsKey('result')) {
+          return data['result'];
+        } else {
+          return false;
+        }
+      } else {
+        debugPrint('Erreur réseau: ${response.statusCode}');
+        return false;
+      }
+    } catch (e) {
+      debugPrint('Erreur lors de la requête: $e');
+      return false;
+    }
+  }
 }