diff --git a/apps/wpmw/views.py b/apps/wpmw/views.py
index d382df97..12611df1 100644
--- a/apps/wpmw/views.py
+++ b/apps/wpmw/views.py
@@ -95,14 +95,12 @@ class WprViewSet(CustomListModelMixin, RetrieveModelMixin, ComplexQueryMixin, Cu
         vdata = sr.validated_data
         items = vdata["items"]
         number_outs = [i["number_out"] for i in items]
-        existing_numbers = Wpr.objects.filter(number_out__in=number_outs).values_list('number_out', flat=True)
+        existing_numbers = Wpr.objects.filter(number_out__in=number_outs, number_out__isnull=False).values_list('number_out', flat=True)
         if existing_numbers.exists():
             used_numbers = list(existing_numbers)
             raise ParseError(f"以下对外编号已被使用: {used_numbers[0]} 共{len(used_numbers)}个")
         for i in items:
             wpr = Wpr.objects.get(id=i["id"])
-            if wpr.number_out:
-                raise ParseError(f"编号为{wpr.number}的产品已经分配了对外编号")
             wpr.number_out = i["number_out"]
             wpr.save()
         return Response()
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