diff --git a/src/app/api/creation/sync-stock/route.ts b/src/app/api/creation/sync-stock/route.ts
index 6dc30bb..cc38976 100644
--- a/src/app/api/creation/sync-stock/route.ts
+++ b/src/app/api/creation/sync-stock/route.ts
@@ -1,7 +1,7 @@
 import { NextRequest, NextResponse } from 'next/server'
 import { getServerSession } from 'next-auth'
 import { authOptions } from '@/lib/auth'
-import { fetchPendingProducts, findColIndex } from '@/lib/creationSheets'
+import { findColIndex } from '@/lib/creationSheets'
 import { getConfig } from '@/lib/shopifySync'
 
 export async function POST(req: NextRequest) {
@@ -86,8 +86,13 @@ export async function POST(req: NextRequest) {
           try {
             // Récupérer le variant pour obtenir inventory_item_id
             const pRes = await fetch(`${baseUrl}/products/${shopifyId}.json?fields=variants`, { headers })
+            if (pRes.status === 404) {
+              // Produit supprimé de Shopify, on ignore silencieusement
+              continue
+            }
             if (!pRes.ok) {
-              send({ type: 'error', title, message: `Produit ${shopifyId} introuvable (${pRes.status})` })
+              const msg = `Produit ${shopifyId} erreur (${pRes.status})`
+              send({ type: 'error', title, message: msg })
               errors++
               continue
             }
@@ -121,6 +126,7 @@ export async function POST(req: NextRequest) {
         send({ type: 'done', updated, errors })
       } catch (err) {
         const message = err instanceof Error ? err.message : 'Erreur inconnue'
+        console.error('[sync-stock] fatal:', message)
         send({ type: 'done', updated: 0, errors: 1, fatalError: message })
       } finally {
         controller.close()
diff --git a/src/lib/creationSheets.ts b/src/lib/creationSheets.ts
index b90fd3e..7af50dd 100644
--- a/src/lib/creationSheets.ts
+++ b/src/lib/creationSheets.ts
@@ -114,11 +114,14 @@ export async function writeShopifyIdToSheet(tab: string, rowNumber: number, shop
     headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
     body: new URLSearchParams({ grant_type: 'urn:ietf:params:oauth:grant-type:jwt-bearer', assertion: jwt }),
   })
-  if (!tokenRes.ok) return
+  if (!tokenRes.ok) {
+    console.error(`[sheets] token error ${tokenRes.status} for ${tab}!A${rowNumber}`)
+    return
+  }
   const { access_token } = await tokenRes.json() as { access_token: string }
 
   const range = encodeURIComponent(`${tab}!A${rowNumber}`)
-  await fetch(
+  const writeRes = await fetch(
     `https://sheets.googleapis.com/v4/spreadsheets/${sheetId}/values/${range}?valueInputOption=RAW`,
     {
       method: 'PUT',
@@ -126,6 +129,10 @@ export async function writeShopifyIdToSheet(tab: string, rowNumber: number, shop
       body: JSON.stringify({ range: `${tab}!A${rowNumber}`, majorDimension: 'ROWS', values: [[shopifyId]] }),
     },
   )
+  if (!writeRes.ok) {
+    const txt = await writeRes.text()
+    console.error(`[sheets] write error ${writeRes.status} for ${tab}!A${rowNumber}: ${txt}`)
+  }
 }
 
 export async function fetchPendingProducts(