Better management of unique constraint for Part

InvenTree/part/migrations/0068_part_unique_part.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.2.4 on 2021-06-21 23:10
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0067_partinternalpricebreak'),
+    ]
+
+    operations = [
+        migrations.AddConstraint(
+            model_name='part',
+            constraint=models.UniqueConstraint(fields=('name', 'IPN', 'revision'), name='unique_part'),
+        ),
+    ]