Added duplicate stock model file

app/Models/DuplicateStock.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class DuplicateStock extends Model
+{
+    use SoftDeletes;
+
+    protected $fillable = [
+        'stock_data_master_id',
+        'created_at',
+		'updated_at',
+		'created_by',
+        'updated_by',
+    ];
+
+    public function stockDataMaster(): BelongsTo
+    {
+        return $this->belongsTo(StockDataMaster::class);
+    }
+}