diff --git a/app/Services/StockService.php b/app/Services/StockService.php
index d3ff99e6..5448a137 100644
--- a/app/Services/StockService.php
+++ b/app/Services/StockService.php
@@ -228,7 +228,12 @@ public function adjustments(int $stockId): array
     {
         $tenantId = $this->tenantId();
 
-        $stock = Stock::where('tenant_id', $tenantId)->findOrFail($stockId);
+        // stockId 또는 item_id로 Stock 검색
+        $stock = Stock::where('tenant_id', $tenantId)->find($stockId)
+            ?? Stock::where('tenant_id', $tenantId)->where('item_id', $stockId)->first();
+        if (! $stock) {
+            throw new \Illuminate\Database\Eloquent\ModelNotFoundException;
+        }
 
         $transactions = StockTransaction::where('tenant_id', $tenantId)
             ->where('stock_id', $stock->id)
@@ -256,7 +261,12 @@ public function createAdjustment(int $stockId, array $data): array
         $userId = $this->apiUserId();
 
         return DB::transaction(function () use ($stockId, $data, $tenantId, $userId) {
-            $stock = Stock::where('tenant_id', $tenantId)->findOrFail($stockId);
+            // stockId 또는 item_id로 Stock 검색 (목록 API가 Item ID를 반환하므로)
+            $stock = Stock::where('tenant_id', $tenantId)->find($stockId)
+                ?? Stock::where('tenant_id', $tenantId)->where('item_id', $stockId)->first();
+            if (! $stock) {
+                throw new \Illuminate\Database\Eloquent\ModelNotFoundException;
+            }
 
             $qty = (float) $data['quantity'];