diff --git a/apps/inm/migrations/0027_alter_materialbatch_unique_together.py b/apps/inm/migrations/0027_alter_materialbatch_unique_together.py
new file mode 100644
index 00000000..b17b502d
--- /dev/null
+++ b/apps/inm/migrations/0027_alter_materialbatch_unique_together.py
@@ -0,0 +1,17 @@
+# Generated by Django 3.2.12 on 2025-02-21 09:23
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('inm', '0026_mioitemw_ftest'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='materialbatch',
+            unique_together=set(),
+        ),
+    ]
diff --git a/apps/inm/models.py b/apps/inm/models.py
index 57a8b6fb..c0244bd4 100644
--- a/apps/inm/models.py
+++ b/apps/inm/models.py
@@ -36,9 +36,6 @@ class MaterialBatch(BaseModel):
     material_ofrom = models.ForeignKey(Material, verbose_name='原料物料', on_delete=models.SET_NULL, null=True, blank=True, related_name='mb_mofrom')
     defect = models.ForeignKey('qm.defect', verbose_name='缺陷', on_delete=models.PROTECT, null=True, blank=True)
 
-    class Meta:
-        unique_together = ('material', 'batch', 'warehouse')
-
 
 class MaterialBatchA(BaseModel):
     """
diff --git a/apps/inm/services.py b/apps/inm/services.py
index 4f05a2b7..c7a9d36e 100644
--- a/apps/inm/services.py
+++ b/apps/inm/services.py
@@ -325,7 +325,7 @@ class InmService:
             state = WMaterial.WM_OK
             if defect:
                 state = WMaterial.WM_NOTOK
-            mb, _ = MaterialBatch.safe_get_or_create(
+            mb, _ = MaterialBatch.objects.get_or_create(
                 material=material, 
                 warehouse=warehouse, 
                 batch=batch,