diff --git a/src/main.js b/src/main.js
index 443db82a..005160c0 100644
--- a/src/main.js
+++ b/src/main.js
@@ -218,17 +218,17 @@ router.afterEach(async () => {
   try {
     await storage.sync();
   } catch (error) {
-    if (
-      error.name === "AxiosError" &&
-      [AxiosError.ETIMEDOUT, AxiosError.ECONNABORTED, AxiosError.ERR_NETWORK].includes(error.code)
-    ) {
-      toast.error(
-        "Une erreur de réseau est survenue. Si votre connexion " +
-          "est instable, vous pouvez passer en mode hors-ligne.",
-      );
-      return;
+    if (error.name === "AxiosError") {
+      if ([AxiosError.ETIMEDOUT, AxiosError.ECONNABORTED, AxiosError.ERR_NETWORK].includes(error.code)) {
+        toast.error(
+          "Une erreur de réseau est survenue. Si votre connexion " +
+            "est instable, vous pouvez passer en mode hors-ligne.",
+        );
+        return;
+      } else if (error.code === AxiosError.ERR_BAD_REQUEST) {
+        toast.error("Un problème technique est survenu. Veuillez réessayer ultérieurement.");
+      }
     }
-
     throw error;
   }
 });
diff --git a/src/stores/storage.js b/src/stores/storage.js
index c428fcdd..59442b0e 100644
--- a/src/stores/storage.js
+++ b/src/stores/storage.js
@@ -3,6 +3,8 @@ import { computed, ref, watch } from "vue";
 import { useLocalStorage, useOnline } from "@vueuse/core";
 import { apiClient, createOperatorRecord } from "@/cartobio-api.js";
 import { legalProjectionSurface } from "@/utils/features.js";
+import { AxiosError } from "axios";
+import toast from "@/utils/toast.js";
 
 /**
  * @typedef {import('@agencebio/cartobio-types').AgenceBioNormalizedOperator} AgenceBioNormalizedOperator
@@ -454,6 +456,10 @@ export const useCartoBioStorage = defineStore("storage", () => {
             continue;
           }
 
+          if (e.response?.status === 400) {
+            delete syncQueues.value[recordId];
+          }
+
           throw e;
         }
       }
@@ -462,7 +468,28 @@ export const useCartoBioStorage = defineStore("storage", () => {
     }
   }
 
-  watch(() => [online, syncQueues], sync, { deep: true });
+  watch(
+    () => [online, syncQueues],
+    async () => {
+      try {
+        await sync();
+      } catch (error) {
+        if (error.name === "AxiosError") {
+          if ([AxiosError.ETIMEDOUT, AxiosError.ECONNABORTED, AxiosError.ERR_NETWORK].includes(error.code)) {
+            toast.error(
+              "Une erreur de réseau est survenue. Si votre connexion " +
+                "est instable, vous pouvez passer en mode hors-ligne.",
+            );
+            return;
+          } else if (error.code === AxiosError.ERR_BAD_REQUEST) {
+            toast.error("Un problème technique est survenu. Veuillez réessayer ultérieurement.");
+          }
+        }
+        throw error;
+      }
+    },
+    { deep: true },
+  );
 
   return {
     // storage ref
diff --git a/src/stores/storage.test.js b/src/stores/storage.test.js
index 9284ab36..cd50c783 100644
--- a/src/stores/storage.test.js
+++ b/src/stores/storage.test.js
@@ -3,7 +3,7 @@ import { createTestingPinia } from "@pinia/testing";
 import { SyncOperation, useCartoBioStorage } from "@/stores/storage.js";
 import record from "@/utils/__fixtures__/record-with-features.json" assert { type: "json" };
 import axios from "axios";
-
+import axios, { AxiosError } from "axios";
 const pinia = createTestingPinia({ createSpy: vi.fn, stubActions: false });
 
 beforeEach(() => {
@@ -95,4 +95,22 @@ describe("storage", () => {
       ]);
     });
   });
+
+  describe("handling of errors", () => {
+    it("should pop operation if 400 code is returned", async () => {
+      const recordId = record.record_id;
+      await storage.addRecord(recordId);
+
+      const error = new AxiosError("BAD_REQUEST_AXIOS");
+      error.response = { status: 400, data: { message: "bad request" } };
+      axios.__createMock.patch.mockRejectedValueOnce(error);
+
+      storage.addSyncOperation(
+        recordId,
+        new SyncOperation(SyncOperation.ACTIONS.RECORD_INFO, { version_name: "Version test au nom changé" }),
+      );
+
+      expect(storage.sync).rejects.toThrow("BAD_REQUEST_AXIOS");
+    });
+  });
 });