Make Organization.billing_entity nullable

src/servala/core/migrations/0003_billing_entity_nullable.py

@@ -0,0 +1,25 @@
+# Generated by Django 5.2b1 on 2025-03-20 08:12
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("core", "0002_billingentity_created_at_billingentity_updated_at_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="organization",
+            name="billing_entity",
+            field=models.ForeignKey(
+                null=True,
+                on_delete=django.db.models.deletion.PROTECT,
+                related_name="organizations",
+                to="core.billingentity",
+                verbose_name="Billing entity",
+            ),
+        ),
+    ]

src/servala/core/models/organization.py

@@ -13,6 +13,7 @@ class Organization(ServalaModelMixin, models.Model):
         on_delete=models.PROTECT,
         related_name="organizations",
         verbose_name=_("Billing entity"),
+        null=True,  # TODO: billing entity should be required
     )
     origin = models.ForeignKey(
         to="OrganizationOrigin",