diff --git a/uncloud_django_based/uncloud/uncloud/urls.py b/uncloud_django_based/uncloud/uncloud/urls.py
index 00eaf16..343e06b 100644
--- a/uncloud_django_based/uncloud/uncloud/urls.py
+++ b/uncloud_django_based/uncloud/uncloud/urls.py
@@ -44,6 +44,8 @@ router.register(r'vm/vm', vmviews.VMProductViewSet, basename='vmproduct')
 
 # Services
 router.register(r'service/matrix', serviceviews.MatrixServiceProductViewSet, basename='matrixserviceproduct')
+router.register(r'service/generic', serviceviews.GenericServiceProductViewSet, basename='genericserviceproduct')
+
 
 # Net
 router.register(r'net/vpn', netviews.VPNNetworkViewSet, basename='vpnnet')
diff --git a/uncloud_django_based/uncloud/uncloud_net/migrations/0003_auto_20200417_0551.py b/uncloud_django_based/uncloud/uncloud_net/migrations/0003_auto_20200417_0551.py
new file mode 100644
index 0000000..24f4a7f
--- /dev/null
+++ b/uncloud_django_based/uncloud/uncloud_net/migrations/0003_auto_20200417_0551.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.0.5 on 2020-04-17 05:51
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_net', '0002_auto_20200409_1225'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='vpnnetwork',
+            name='status',
+            field=models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('SCHEDULED', 'Scheduled'), ('ACTIVE', 'Active'), ('MODIFYING', 'Modifying'), ('DELETED', 'Deleted'), ('DISABLED', 'Disabled'), ('UNUSABLE', 'Unusable')], default='AWAITING_PAYMENT', max_length=32),
+        ),
+    ]
diff --git a/uncloud_django_based/uncloud/uncloud_pay/management/commands/charge-negative-balance.py b/uncloud_django_based/uncloud/uncloud_pay/management/commands/charge-negative-balance.py
index 24d53bf..8ee8736 100644
--- a/uncloud_django_based/uncloud/uncloud_pay/management/commands/charge-negative-balance.py
+++ b/uncloud_django_based/uncloud/uncloud_pay/management/commands/charge-negative-balance.py
@@ -1,6 +1,6 @@
 from django.core.management.base import BaseCommand
 from uncloud_auth.models import User
-from uncloud_pay.models import Order, Bill, PaymentMethod, get_balance_for
+from uncloud_pay.models import Order, Bill, PaymentMethod, get_balance_for_user
 
 from datetime import timedelta
 from django.utils import timezone
@@ -15,7 +15,7 @@ class Command(BaseCommand):
         users = User.objects.all()
         print("Processing {} users.".format(users.count()))
         for user in users:
-            balance = get_balance_for(user)
+            balance = get_balance_for_user(user)
             if balance < 0:
                 print("User {} has negative balance ({}), charging.".format(user.username, balance))
                 payment_method = PaymentMethod.get_primary_for(user)
diff --git a/uncloud_django_based/uncloud/uncloud_pay/models.py b/uncloud_django_based/uncloud/uncloud_pay/models.py
index 59a149c..4cb1952 100644
--- a/uncloud_django_based/uncloud/uncloud_pay/models.py
+++ b/uncloud_django_based/uncloud/uncloud_pay/models.py
@@ -92,19 +92,19 @@ class Payment(models.Model):
                               default='unknown')
     timestamp = models.DateTimeField(editable=False, auto_now_add=True)
 
-    # WIP prepaid and service activation logic by fnux.
-    ## We override save() in order to active products awaiting payment.
-    #def save(self, *args, **kwargs):
-    #    # TODO: only run activation logic on creation, not on update.
-    #    unpaid_bills_before_payment = Bill.get_unpaid_for(self.owner)
-    #    super(Payment, self).save(*args, **kwargs) # Save payment in DB.
-    #    unpaid_bills_after_payment = Bill.get_unpaid_for(self.owner)
+    # We override save() in order to active products awaiting payment.
+    def save(self, *args, **kwargs):
+        # _state.adding is switched to false after super(...) call.
+        being_created = self._state.adding
 
-    #    newly_paid_bills = list(
-    #            set(unpaid_bills_before_payment) - set(unpaid_bills_after_payment))
-    #    for bill in newly_paid_bills:
-    #        bill.activate_orders()
+        unpaid_bills_before_payment = Bill.get_unpaid_for(self.owner)
+        super(Payment, self).save(*args, **kwargs) # Save payment in DB.
+        unpaid_bills_after_payment = Bill.get_unpaid_for(self.owner)
 
+        newly_paid_bills = list(
+                set(unpaid_bills_before_payment) - set(unpaid_bills_after_payment))
+        for bill in newly_paid_bills:
+            bill.activate_products()
 
 class PaymentMethod(models.Model):
     uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
@@ -201,6 +201,12 @@ class Bill(models.Model):
 
     valid = models.BooleanField(default=True)
 
+    # Trigger product activation if bill paid at creation (from balance).
+    def save(self, *args, **kwargs):
+        super(Bill, self).save(*args, **kwargs)
+        if not self in Bill.get_unpaid_for(self.owner):
+            self.activate_products()
+
     @property
     def reference(self):
         return "{}-{}".format(
@@ -227,6 +233,15 @@ class Bill(models.Model):
         # A bill is final when its ending date is passed.
         return self.ending_date < timezone.now()
 
+    def activate_products(self):
+        for order in self.order_set.all():
+            # FIXME: using __something might not be a good idea.
+            for product_class in Product.__subclasses__():
+                for product in product_class.objects.filter(order=order):
+                    if product.status == UncloudStatus.AWAITING_PAYMENT:
+                        product.status = UncloudStatus.PENDING
+                        product.save()
+
     @staticmethod
     def generate_for(year, month, user):
         # /!\ We exclusively work on the specified year and month.
@@ -248,7 +263,7 @@ class Bill(models.Model):
         #     (next_bill) ending_date, a new bill has to be generated.
         #   * For yearly bill: if previous_bill.ending_date is on working
         #     month, generate new bill.
-        unpaid_orders = { 'monthly_or_less': [], 'yearly': {}}
+        unpaid_orders = { 'monthly_or_less': [], 'yearly': {} }
         for order in orders:
             try:
                 previous_bill = order.bill.latest('ending_date')
@@ -276,7 +291,7 @@ class Bill(models.Model):
                     else:
                         unpaid_orders['yearly'][next_yearly_bill_start_on] = bucket + [order]
             else:
-                if previous_bill == None or previous_bill.ending_date <= ending_date:
+                if previous_bill == None or previous_bill.ending_date < ending_date:
                     unpaid_orders['monthly_or_less'].append(order)
 
         # Handle working month's billing.
@@ -335,25 +350,24 @@ class Bill(models.Model):
 
     @staticmethod
     def get_unpaid_for(user):
-        balance = get_balance_for(user)
+        balance = get_balance_for_user(user)
         unpaid_bills = []
         # No unpaid bill if balance is positive.
         if balance >= 0:
-            return []
+            return unpaid_bills
         else:
             bills = Bill.objects.filter(
                     owner=user,
-                    due_date__lt=timezone.now()
                     ).order_by('-creation_date')
 
             # Amount to be paid by the customer.
             unpaid_balance = abs(balance)
             for bill in bills:
-                if  unpaid_balance < 0:
+                if unpaid_balance <= 0:
                     break
 
-                    unpaid_balance -= bill.amount
-                    unpaid_bills.append(bill)
+                unpaid_balance -= bill.total
+                unpaid_bills.append(bill)
 
             return unpaid_bills
 
@@ -464,6 +478,11 @@ class Order(models.Model):
                               choices = RecurringPeriod.choices,
                               default = RecurringPeriod.PER_MONTH)
 
+    # Trigger initial bill generation at order creation.
+    def save(self, *args, **kwargs):
+        super(Order, self).save(*args, **kwargs)
+        Bill.generate_for(self.starting_date.year, self.starting_date.month, self.owner)
+
     @property
     def records(self):
         return OrderRecord.objects.filter(order=self)
@@ -477,6 +496,10 @@ class Order(models.Model):
         return reduce(lambda acc, record: acc + record.recurring_price, self.records, 0)
 
     # Used by uncloud_pay tests.
+    @property
+    def bills(self):
+        return Bill.objects.filter(order=self)
+
     def add_record(self, one_time_price, recurring_price, description):
       OrderRecord.objects.create(order=self,
               one_time_price=one_time_price,
@@ -531,11 +554,11 @@ class Product(UncloudModel):
                               on_delete=models.CASCADE,
                               editable=False)
 
-    description = ""
+    description = "Generic Product"
 
     status = models.CharField(max_length=32,
             choices=UncloudStatus.choices,
-            default=UncloudStatus.PENDING)
+            default=UncloudStatus.AWAITING_PAYMENT)
 
     order = models.ForeignKey(Order,
                               on_delete=models.CASCADE,
@@ -556,7 +579,7 @@ class Product(UncloudModel):
         if being_created:
             record = OrderRecord(
                 one_time_price=self.one_time_price,
-                recurring_price=self.recurring_price(self.recurring_period),
+                recurring_price=self.recurring_price(recurring_period=self.recurring_period),
                 description=self.description)
             self.order.orderrecord_set.add(record, bulk=False)
 
diff --git a/uncloud_django_based/uncloud/uncloud_pay/tests.py b/uncloud_django_based/uncloud/uncloud_pay/tests.py
index d441e75..9e8728d 100644
--- a/uncloud_django_based/uncloud/uncloud_pay/tests.py
+++ b/uncloud_django_based/uncloud/uncloud_pay/tests.py
@@ -3,6 +3,7 @@ from django.contrib.auth import get_user_model
 from datetime import datetime, date, timedelta
 
 from .models import *
+from uncloud_service.models import GenericServiceProduct
 
 class BillingTestCase(TestCase):
     def setUp(self):
@@ -10,9 +11,6 @@ class BillingTestCase(TestCase):
                 username='jdoe',
                 email='john.doe@domain.tld')
 
-    def test_truth(self):
-        self.assertEqual(1+1, 2)
-
     def test_basic_monthly_billing(self):
         one_time_price = 10
         recurring_price = 20
@@ -31,7 +29,7 @@ class BillingTestCase(TestCase):
         order.add_record(one_time_price, recurring_price, description)
 
         # Generate & check bill for first month: full recurring_price + setup.
-        first_month_bills = Bill.generate_for(2020, 3, self.user)
+        first_month_bills = order.bills # Initial bill generated at order creation.
         self.assertEqual(len(first_month_bills), 1)
         self.assertEqual(first_month_bills[0].total, one_time_price + recurring_price)
 
@@ -65,7 +63,7 @@ class BillingTestCase(TestCase):
         order.add_record(one_time_price, recurring_price, description)
 
         # Generate & check bill for first year: recurring_price + setup.
-        first_year_bills = Bill.generate_for(2020, 3, self.user)
+        first_year_bills = order.bills # Initial bill generated at order creation.
         self.assertEqual(len(first_year_bills), 1)
         self.assertEqual(first_year_bills[0].starting_date.date(),
                 date.fromisoformat('2020-03-31'))
@@ -106,7 +104,7 @@ class BillingTestCase(TestCase):
         order.add_record(one_time_price, recurring_price, description)
 
         # Generate & check bill for first month: recurring_price + setup.
-        first_month_bills = Bill.generate_for(2020, 3, self.user)
+        first_month_bills = order.bills
         self.assertEqual(len(first_month_bills), 1)
         self.assertEqual(float(first_month_bills[0].total),
                 round(16 * recurring_price, AMOUNT_DECIMALS) + one_time_price)
@@ -116,3 +114,41 @@ class BillingTestCase(TestCase):
         self.assertEqual(len(second_month_bills), 1)
         self.assertEqual(float(second_month_bills[0].total),
                 round(12 * recurring_price, AMOUNT_DECIMALS))
+
+class ProductActivationTestCase(TestCase):
+    def setUp(self):
+        self.user = get_user_model().objects.create(
+                username='jdoe',
+                email='john.doe@domain.tld')
+
+    def test_product_activation(self):
+        starting_date = datetime.fromisoformat('2020-03-01')
+
+        order = Order.objects.create(
+                owner=self.user,
+                starting_date=starting_date,
+                recurring_period=RecurringPeriod.PER_MONTH)
+        order.save()
+
+        product = GenericServiceProduct(
+                custom_description="Test product",
+                custom_one_time_price=0,
+                custom_recurring_price=20,
+                owner=self.user,
+                order=order)
+        product.save()
+
+        # XXX: to be automated.
+        order.add_record(product.one_time_price, product.recurring_price(), product.description)
+
+        # Validate initial state: must be awaiting payment.
+        self.assertEqual(product.status, UncloudStatus.AWAITING_PAYMENT)
+
+        # Pay initial bill, check that product is activated.
+        amount = product.order.bills[0].total
+        payment = Payment(owner=self.user, amount=amount)
+        payment.save()
+        self.assertEqual(
+                GenericServiceProduct.objects.get(uuid=product.uuid).status,
+                UncloudStatus.PENDING
+                )
diff --git a/uncloud_django_based/uncloud/uncloud_service/migrations/0002_auto_20200418_0641.py b/uncloud_django_based/uncloud/uncloud_service/migrations/0002_auto_20200418_0641.py
new file mode 100644
index 0000000..717f163
--- /dev/null
+++ b/uncloud_django_based/uncloud/uncloud_service/migrations/0002_auto_20200418_0641.py
@@ -0,0 +1,41 @@
+# Generated by Django 3.0.5 on 2020-04-18 06:41
+
+from django.conf import settings
+import django.contrib.postgres.fields.jsonb
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('uncloud_pay', '0005_auto_20200413_0924'),
+        ('uncloud_service', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='matrixserviceproduct',
+            name='status',
+            field=models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('SCHEDULED', 'Scheduled'), ('ACTIVE', 'Active'), ('MODIFYING', 'Modifying'), ('DELETED', 'Deleted'), ('DISABLED', 'Disabled'), ('UNUSABLE', 'Unusable')], default='AWAITING_PAYMENT', max_length=32),
+        ),
+        migrations.CreateModel(
+            name='GenericServiceProduct',
+            fields=[
+                ('extra_data', django.contrib.postgres.fields.jsonb.JSONField(blank=True, editable=False, null=True)),
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('status', models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('SCHEDULED', 'Scheduled'), ('ACTIVE', 'Active'), ('MODIFYING', 'Modifying'), ('DELETED', 'Deleted'), ('DISABLED', 'Disabled'), ('UNUSABLE', 'Unusable')], default='AWAITING_PAYMENT', max_length=32)),
+                ('custom_description', models.TextField()),
+                ('custom_recurring_price', models.DecimalField(decimal_places=2, default=0.0, max_digits=10, validators=[django.core.validators.MinValueValidator(0)])),
+                ('custom_one_time_price', models.DecimalField(decimal_places=2, default=0.0, max_digits=10, validators=[django.core.validators.MinValueValidator(0)])),
+                ('order', models.ForeignKey(editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_pay.Order')),
+                ('owner', models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]
diff --git a/uncloud_django_based/uncloud/uncloud_service/models.py b/uncloud_django_based/uncloud/uncloud_service/models.py
index fb1af50..26bedfd 100644
--- a/uncloud_django_based/uncloud/uncloud_service/models.py
+++ b/uncloud_django_based/uncloud/uncloud_service/models.py
@@ -1,8 +1,9 @@
 import uuid
 
 from django.db import models
-from uncloud_pay.models import Product, RecurringPeriod
+from uncloud_pay.models import Product, RecurringPeriod, AMOUNT_MAX_DIGITS, AMOUNT_DECIMALS
 from uncloud_vm.models import VMProduct, VMDiskImageProduct
+from django.core.validators import MinValueValidator
 
 class MatrixServiceProduct(Product):
     monthly_managment_fee = 20
@@ -16,7 +17,7 @@ class MatrixServiceProduct(Product):
     domain = models.CharField(max_length=255, default='domain.tld')
 
     # Default recurring price is PER_MONT, see Product class.
-    def recurring_price(self):
+    def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
         return self.monthly_managment_fee
 
     @staticmethod
@@ -33,3 +34,30 @@ class MatrixServiceProduct(Product):
     @property
     def one_time_price(self):
         return 30
+
+class GenericServiceProduct(Product):
+    custom_description = models.TextField()
+    custom_recurring_price = models.DecimalField(default=0.0,
+            max_digits=AMOUNT_MAX_DIGITS,
+            decimal_places=AMOUNT_DECIMALS,
+            validators=[MinValueValidator(0)])
+    custom_one_time_price = models.DecimalField(default=0.0,
+            max_digits=AMOUNT_MAX_DIGITS,
+            decimal_places=AMOUNT_DECIMALS,
+            validators=[MinValueValidator(0)])
+
+    def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
+        # FIXME: handle recurring_period somehow.
+        return self.custom_recurring_price
+
+    @property
+    def description(self):
+        return self.custom_description
+
+    @property
+    def one_time_price(self):
+        return self.custom_one_time_price
+
+    @staticmethod
+    def allowed_recurring_periods():
+        return RecurringPeriod.choices
diff --git a/uncloud_django_based/uncloud/uncloud_service/serializers.py b/uncloud_django_based/uncloud/uncloud_service/serializers.py
index b4038b7..1d50bbf 100644
--- a/uncloud_django_based/uncloud/uncloud_service/serializers.py
+++ b/uncloud_django_based/uncloud/uncloud_service/serializers.py
@@ -1,5 +1,5 @@
 from rest_framework import serializers
-from .models import MatrixServiceProduct
+from .models import *
 from uncloud_vm.serializers import ManagedVMProductSerializer
 from uncloud_vm.models import VMProduct
 from uncloud_pay.models import RecurringPeriod
@@ -15,3 +15,14 @@ class MatrixServiceProductSerializer(serializers.ModelSerializer):
         model = MatrixServiceProduct
         fields = ['uuid', 'order', 'owner', 'status', 'vm', 'domain', 'recurring_period']
         read_only_fields = ['uuid', 'order', 'owner', 'status']
+
+class GenericServiceProductSerializer(serializers.ModelSerializer):
+    # Custom field used at creation (= ordering) only.
+    recurring_period = serializers.ChoiceField(
+            choices=GenericServiceProduct.allowed_recurring_periods())
+
+    class Meta:
+        model = GenericServiceProduct
+        fields = ['uuid', 'order', 'owner', 'status', 'custom_recurring_price',
+                'custom_description', 'custom_one_time_price', 'recurring_period']
+        read_only_fields = ['uuid', 'order', 'owner', 'status']
diff --git a/uncloud_django_based/uncloud/uncloud_service/views.py b/uncloud_django_based/uncloud/uncloud_service/views.py
index e25f3a5..d4be3a6 100644
--- a/uncloud_django_based/uncloud/uncloud_service/views.py
+++ b/uncloud_django_based/uncloud/uncloud_service/views.py
@@ -1,9 +1,10 @@
 from rest_framework import viewsets, permissions
 from rest_framework.response import Response
 from django.db import transaction
+from django.utils import timezone
 
-from .models import MatrixServiceProduct
-from .serializers import MatrixServiceProductSerializer
+from .models import *
+from .serializers import *
 
 from uncloud_pay.helpers import ProductViewSet
 from uncloud_pay.models import Order
@@ -47,7 +48,10 @@ class MatrixServiceProductViewSet(ProductViewSet):
         # Create base order.)
         order = Order.objects.create(
                 recurring_period=order_recurring_period,
-                owner=request.user)
+                owner=request.user,
+                starting_date=timezone.now()
+                )
+        order.save()
 
         # Create unerderlying VM.
         data = serializer.validated_data.pop('vm')
@@ -65,3 +69,45 @@ class MatrixServiceProductViewSet(ProductViewSet):
                 vm=vm)
 
         return Response(serializer.data)
+
+class GenericServiceProductViewSet(ProductViewSet):
+    permission_classes = [permissions.IsAuthenticated]
+    serializer_class = GenericServiceProductSerializer
+
+    def get_queryset(self):
+        return GenericServiceProduct.objects.filter(owner=self.request.user)
+
+    @transaction.atomic
+    def create(self, request):
+        # Extract serializer data.
+        serializer = self.get_serializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        order_recurring_period = serializer.validated_data.pop("recurring_period")
+
+        # Create base order.
+        order = Order.objects.create(
+                recurring_period=order_recurring_period,
+                owner=request.user,
+                starting_date=timezone.now()
+                )
+        order.save()
+
+        # Create service.
+        print(serializer.validated_data)
+        service = serializer.save(order=order, owner=request.user)
+
+        # XXX: Move this to some kind of on_create hook in parent
+        # Product class?
+        order.add_record(
+                service.one_time_price,
+                service.recurring_price,
+                service.description)
+
+        # XXX: Move this to some kind of on_create hook in parent
+        # Product class?
+        order.add_record(
+                service.one_time_price,
+                service.recurring_price,
+                service.description)
+
+        return Response(serializer.data)
diff --git a/uncloud_django_based/uncloud/uncloud_vm/migrations/0004_vmproduct_primary_disk.py b/uncloud_django_based/uncloud/uncloud_vm/migrations/0004_vmproduct_primary_disk.py
index 90c4e33..c78acc1 100644
--- a/uncloud_django_based/uncloud/uncloud_vm/migrations/0004_vmproduct_primary_disk.py
+++ b/uncloud_django_based/uncloud/uncloud_vm/migrations/0004_vmproduct_primary_disk.py
@@ -7,7 +7,7 @@ import django.db.models.deletion
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('uncloud_vm', '0003_remove_vmhost_vms'),
+        ('uncloud_vm', '0004_remove_vmproduct_vmid'),
     ]
 
     operations = [
diff --git a/uncloud_django_based/uncloud/uncloud_vm/migrations/0009_auto_20200417_0551.py b/uncloud_django_based/uncloud/uncloud_vm/migrations/0009_auto_20200417_0551.py
new file mode 100644
index 0000000..641f849
--- /dev/null
+++ b/uncloud_django_based/uncloud/uncloud_vm/migrations/0009_auto_20200417_0551.py
@@ -0,0 +1,23 @@
+# Generated by Django 3.0.5 on 2020-04-17 05:51
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_vm', '0008_auto_20200403_1727'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='vmproduct',
+            name='status',
+            field=models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('SCHEDULED', 'Scheduled'), ('ACTIVE', 'Active'), ('MODIFYING', 'Modifying'), ('DELETED', 'Deleted'), ('DISABLED', 'Disabled'), ('UNUSABLE', 'Unusable')], default='AWAITING_PAYMENT', max_length=32),
+        ),
+        migrations.AlterField(
+            model_name='vmsnapshotproduct',
+            name='status',
+            field=models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('SCHEDULED', 'Scheduled'), ('ACTIVE', 'Active'), ('MODIFYING', 'Modifying'), ('DELETED', 'Deleted'), ('DISABLED', 'Disabled'), ('UNUSABLE', 'Unusable')], default='AWAITING_PAYMENT', max_length=32),
+        ),
+    ]
diff --git a/uncloud_django_based/uncloud/uncloud_vm/migrations/0011_merge_20200418_0641.py b/uncloud_django_based/uncloud/uncloud_vm/migrations/0011_merge_20200418_0641.py
new file mode 100644
index 0000000..c0d4c32
--- /dev/null
+++ b/uncloud_django_based/uncloud/uncloud_vm/migrations/0011_merge_20200418_0641.py
@@ -0,0 +1,14 @@
+# Generated by Django 3.0.5 on 2020-04-18 06:41
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_vm', '0009_auto_20200417_0551'),
+        ('uncloud_vm', '0010_auto_20200413_0924'),
+    ]
+
+    operations = [
+    ]
diff --git a/uncloud_django_based/uncloud/uncloud_vm/migrations/0012_auto_20200418_0641.py b/uncloud_django_based/uncloud/uncloud_vm/migrations/0012_auto_20200418_0641.py
new file mode 100644
index 0000000..9af8649
--- /dev/null
+++ b/uncloud_django_based/uncloud/uncloud_vm/migrations/0012_auto_20200418_0641.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.0.5 on 2020-04-18 06:41
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_vm', '0011_merge_20200418_0641'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='vmdiskproduct',
+            name='status',
+            field=models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('SCHEDULED', 'Scheduled'), ('ACTIVE', 'Active'), ('MODIFYING', 'Modifying'), ('DELETED', 'Deleted'), ('DISABLED', 'Disabled'), ('UNUSABLE', 'Unusable')], default='AWAITING_PAYMENT', max_length=32),
+        ),
+    ]
diff --git a/uncloud_django_based/uncloud/uncloud_vm/views.py b/uncloud_django_based/uncloud/uncloud_vm/views.py
index 50e2e66..71ffe6d 100644
--- a/uncloud_django_based/uncloud/uncloud_vm/views.py
+++ b/uncloud_django_based/uncloud/uncloud_vm/views.py
@@ -116,7 +116,7 @@ class VMProductViewSet(ProductViewSet):
         order_recurring_period = serializer.validated_data.pop("recurring_period")
 
         # Create base order.
-        order = Order.objects.create(
+        order = Order(
                 recurring_period=order_recurring_period,
                 owner=request.user,
                 starting_date=timezone.now()
diff --git a/uncloud_django_based/uncloud/ungleich_service/migrations/0005_auto_20200417_0551.py b/uncloud_django_based/uncloud/ungleich_service/migrations/0005_auto_20200417_0551.py
new file mode 100644
index 0000000..aed07b6
--- /dev/null
+++ b/uncloud_django_based/uncloud/ungleich_service/migrations/0005_auto_20200417_0551.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.0.5 on 2020-04-17 05:51
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ungleich_service', '0004_auto_20200403_1727'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='matrixserviceproduct',
+            name='status',
+            field=models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('SCHEDULED', 'Scheduled'), ('ACTIVE', 'Active'), ('MODIFYING', 'Modifying'), ('DELETED', 'Deleted'), ('DISABLED', 'Disabled'), ('UNUSABLE', 'Unusable')], default='AWAITING_PAYMENT', max_length=32),
+        ),
+    ]
diff --git a/uncloud_django_based/uncloud/ungleich_service/migrations/0006_genericserviceproduct.py b/uncloud_django_based/uncloud/ungleich_service/migrations/0006_genericserviceproduct.py
new file mode 100644
index 0000000..f4bda32
--- /dev/null
+++ b/uncloud_django_based/uncloud/ungleich_service/migrations/0006_genericserviceproduct.py
@@ -0,0 +1,36 @@
+# Generated by Django 3.0.5 on 2020-04-17 08:02
+
+from django.conf import settings
+import django.contrib.postgres.fields.jsonb
+import django.core.validators
+from django.db import migrations, models
+import django.db.models.deletion
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('uncloud_pay', '0005_auto_20200417_0551'),
+        ('ungleich_service', '0005_auto_20200417_0551'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='GenericServiceProduct',
+            fields=[
+                ('extra_data', django.contrib.postgres.fields.jsonb.JSONField(blank=True, editable=False, null=True)),
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('status', models.CharField(choices=[('PENDING', 'Pending'), ('AWAITING_PAYMENT', 'Awaiting payment'), ('BEING_CREATED', 'Being created'), ('SCHEDULED', 'Scheduled'), ('ACTIVE', 'Active'), ('MODIFYING', 'Modifying'), ('DELETED', 'Deleted'), ('DISABLED', 'Disabled'), ('UNUSABLE', 'Unusable')], default='AWAITING_PAYMENT', max_length=32)),
+                ('custom_description', models.TextField()),
+                ('custom_recurring_price', models.DecimalField(decimal_places=2, default=0.0, max_digits=10, validators=[django.core.validators.MinValueValidator(0)])),
+                ('custom_one_time_price', models.DecimalField(decimal_places=2, default=0.0, max_digits=10, validators=[django.core.validators.MinValueValidator(0)])),
+                ('order', models.ForeignKey(editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_pay.Order')),
+                ('owner', models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]