diff --git a/database/migrations/2021_06_29_182934_drop_unique_for_external_id_on_item_table.php b/database/migrations/2021_06_29_182934_drop_unique_for_external_id_on_item_table.php
new file mode 100644
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--- /dev/null
+++ b/database/migrations/2021_06_29_182934_drop_unique_for_external_id_on_item_table.php
@@ -0,0 +1,20 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class DropUniqueForExternalIdOnItemTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('items', function (Blueprint $table) {
+            $table->dropUnique('items_external_id_unique');
+        });
+    }
+}