diff --git a/ereuse_devicehub/commands/adduser.py b/ereuse_devicehub/commands/adduser.py
new file mode 100644
index 00000000..21c4b25d
--- /dev/null
+++ b/ereuse_devicehub/commands/adduser.py
@@ -0,0 +1,24 @@
+import click
+
+from ereuse_devicehub.db import db
+from ereuse_devicehub.resources.agent.models import Person
+from ereuse_devicehub.resources.user.models import User
+
+
+class AddUser:
+    def __init__(self, app) -> None:
+        super().__init__()
+        self.app = app
+        self.schema = app.config.get('DB_SCHEMA')
+        self.app.cli.command('adduser', short_help='add a user.')(self.run)
+
+    @click.argument('email')
+    @click.argument('password')
+    def run(self, email, password):
+        name = email.split('@')[0]
+
+        user = User(email=email, password=password)
+        user.individuals.add(Person(name=name))
+        db.session.add(user)
+
+        db.session.commit()
diff --git a/ereuse_devicehub/commands/initdatas.py b/ereuse_devicehub/commands/initdatas.py
new file mode 100644
index 00000000..4e199fa4
--- /dev/null
+++ b/ereuse_devicehub/commands/initdatas.py
@@ -0,0 +1,40 @@
+from uuid import uuid4
+
+from boltons.urlutils import URL
+
+from ereuse_devicehub.db import db
+from ereuse_devicehub.resources.agent.models import Person
+from ereuse_devicehub.resources.inventory.model import Inventory
+from ereuse_devicehub.resources.user.models import User
+
+
+class InitDatas:
+    def __init__(self, app) -> None:
+        super().__init__()
+        self.app = app
+        self.schema = app.config.get('DB_SCHEMA')
+        self.app.cli.command(
+            'initdata', short_help='Save a minimum structure of datas.'
+        )(self.run)
+
+    def run(self):
+        inv = Inventory(
+            id=self.schema,
+            name="usody",
+            tag_provider=URL('http://localhost:8081'),
+            tag_token=uuid4(),
+            org_id=uuid4(),
+        )
+
+        db.session.add(inv)
+        db.session.commit()
+
+        email = 'user@dhub.com'
+        password = '1234'
+        name = 'user'
+
+        user = User(email=email, password=password)
+        user.individuals.add(Person(name=name))
+        db.session.add(user)
+
+        db.session.commit()
diff --git a/ereuse_devicehub/devicehub.py b/ereuse_devicehub/devicehub.py
index e5e76145..a6c6b7c9 100644
--- a/ereuse_devicehub/devicehub.py
+++ b/ereuse_devicehub/devicehub.py
@@ -5,20 +5,22 @@ from typing import Type
 import boltons.urlutils
 import click
 import click_spinner
-import ereuse_devicehub.ereuse_utils.cli
-from ereuse_devicehub.ereuse_utils.session import DevicehubClient
 from flask import _app_ctx_stack, g
 from flask_login import LoginManager, current_user
 from flask_sqlalchemy import SQLAlchemy
 
+import ereuse_devicehub.ereuse_utils.cli
 from ereuse_devicehub.auth import Auth
 from ereuse_devicehub.client import Client, UserClient
+from ereuse_devicehub.commands.adduser import AddUser
+from ereuse_devicehub.commands.initdatas import InitDatas
 
 # from ereuse_devicehub.commands.reports import Report
 from ereuse_devicehub.commands.users import GetToken
 from ereuse_devicehub.config import DevicehubConfig
 from ereuse_devicehub.db import db
 from ereuse_devicehub.dummy.dummy import Dummy
+from ereuse_devicehub.ereuse_utils.session import DevicehubClient
 from ereuse_devicehub.resources.device.search import DeviceSearch
 from ereuse_devicehub.resources.inventory import Inventory, InventoryDef
 from ereuse_devicehub.resources.user.models import User
@@ -73,6 +75,8 @@ class Devicehub(Teal):
         self.dummy = Dummy(self)
         # self.report = Report(self)
         self.get_token = GetToken(self)
+        self.initdata = InitDatas(self)
+        self.adduser = AddUser(self)
 
         @self.cli.group(
             short_help='Inventory management.',
diff --git a/ereuse_devicehub/migrations/versions/fbb7e2a0cde0_initial.py b/ereuse_devicehub/migrations/versions/fbb7e2a0cde0_initial.py
index 08758ec3..dc39795b 100644
--- a/ereuse_devicehub/migrations/versions/fbb7e2a0cde0_initial.py
+++ b/ereuse_devicehub/migrations/versions/fbb7e2a0cde0_initial.py
@@ -8,12 +8,11 @@ Create Date: 2020-05-07 10:04:40.269511
 import citext
 import sqlalchemy as sa
 import sqlalchemy_utils
-from ereuse_devicehub import teal
-from alembic import context
-from alembic import op
+from alembic import context, op
 from sqlalchemy.dialects import postgresql
 
-from ereuse_devicehub.resources.enums import TransferState, Severity
+from ereuse_devicehub import teal
+from ereuse_devicehub.resources.enums import Severity, TransferState
 
 # revision identifiers, used by Alembic.
 revision = 'fbb7e2a0cde0'
@@ -348,6 +347,7 @@ def upgrade():
         postgresql_using='hash',
         schema=f'{get_inv()}',
     )
+    op.execute(f"CREATE SEQUENCE {get_inv()}.device_seq START 1;")
     op.create_table(
         'agent',
         sa.Column(
diff --git a/ereuse_devicehub/resources/device/models.py b/ereuse_devicehub/resources/device/models.py
index 593ce4e3..1d9c1e79 100644
--- a/ereuse_devicehub/resources/device/models.py
+++ b/ereuse_devicehub/resources/device/models.py
@@ -76,8 +76,8 @@ logger = logging.getLogger(__name__)
 
 
 def create_code(context):
-    _id = Device.query.order_by(Device.id.desc()).first() or 3
-    if not _id == 3:
+    _id = Device.query.order_by(Device.id.desc()).first() or 1
+    if not _id == 1:
         _id = _id.id + 1
     return hashcode.encode(_id)
 
diff --git a/tests/files/devices_lots.csv b/tests/files/devices_lots.csv
index d9bd6680..abb9e9d5 100644
--- a/tests/files/devices_lots.csv
+++ b/tests/files/devices_lots.csv
@@ -1,2 +1,2 @@
 "DHID";"Lot Id";"Lot Name";"Lot Type";"Transfer Status";"Transfer Code";"Transfer Date";"Transfer Creation Date";"Transfer Update Date"
-"O48N2";"b33c5a0d-bc80-453f-805a-560fab88a761";"lot1";"Temporary";"";"";"";"";""
+"93652";"b33c5a0d-bc80-453f-805a-560fab88a761";"lot1";"Temporary";"";"";"";"";""
diff --git a/tests/test_metrics.py b/tests/test_metrics.py
index 706e7260..e81d7af9 100644
--- a/tests/test_metrics.py
+++ b/tests/test_metrics.py
@@ -160,7 +160,7 @@ def test_metrics_action_status(user: UserClient, user2: UserClient):
     head += '"Status Supplier – Created Date";"Status Receiver – Created Date";"Trade-Weight";'
     head += '"Action-Create";"Allocate-Start";"Allocate-User-Code";"Allocate-NumUsers";'
     head += '"UsageTimeAllocate";"Type";"LiveCreate";"UsageTimeHdd"\n'
-    body = '"O48N2";"adebcc5506213fac43cd8473a9c81bcf0cadaed9cb98b2eae651e377a3533c5a";'
+    body = '"93652";"adebcc5506213fac43cd8473a9c81bcf0cadaed9cb98b2eae651e377a3533c5a";'
     body += '"";"Status";"";"foo@foo.com";"Receiver";"";"";"Use";"";"'
     assert head in csv_str
     assert body in csv_str
@@ -207,7 +207,7 @@ def test_complet_metrics_with_trade(user: UserClient, user2: UserClient):
         query=[('filter', {'type': ['Computer'], 'ids': devices_id})],
     )
 
-    body1_lenovo = '"O48N2";"adebcc5506213fac43cd8473a9c81bcf0cadaed9cb98b2eae651e377a3533c5a";"";"Trade";"foo@foo.com";'
+    body1_lenovo = '"93652";"adebcc5506213fac43cd8473a9c81bcf0cadaed9cb98b2eae651e377a3533c5a";"";"Trade";"foo@foo.com";'
     body1_lenovo += '"foo2@foo.com";"Supplier";"NeedConfirmation";"Use";"";'
     body2_lenovo = ';"";"0";"0";"Trade";"0";"0"\n'
 
@@ -232,7 +232,7 @@ def test_complet_metrics_with_trade(user: UserClient, user2: UserClient):
         query=[('filter', {'type': ['Computer'], 'ids': devices_id})],
     )
 
-    body1_lenovo = '"O48N2";"adebcc5506213fac43cd8473a9c81bcf0cadaed9cb98b2eae651e377a3533c5a";"";"Trade";"foo@foo.com";'
+    body1_lenovo = '"93652";"adebcc5506213fac43cd8473a9c81bcf0cadaed9cb98b2eae651e377a3533c5a";"";"Trade";"foo@foo.com";'
     body1_lenovo += '"foo2@foo.com";"Supplier";"NeedConfirmation";"Use";"Use";'
     body2_lenovo = ';"";"0";"0";"Trade";"0";"0"\n'
     body2_acer = ';"";"0";"0";"Trade";"0";"4692.0"\n'
diff --git a/tests/test_render_2_0.py b/tests/test_render_2_0.py
index 4e10a86d..2665d12a 100644
--- a/tests/test_render_2_0.py
+++ b/tests/test_render_2_0.py
@@ -531,7 +531,7 @@ def test_add_monitor(user3: UserClientFlask):
     assert dev.placeholder.id_device_supplier == "b2"
     assert dev.hid == 'monitor-samsung-lc27t55-aaaab'
     assert phid == '1'
-    assert dhid == 'O48N2'
+    assert dhid == '93652'
 
     txt = f'Device "{typ}" placeholder with PHID {phid} and DHID {dhid} '
     txt += 'created successfully'
@@ -571,7 +571,7 @@ def test_update_monitor(user3: UserClientFlask):
     assert dev.placeholder.id_device_supplier == "b2"
     assert dev.hid == 'monitor-samsung-lc27t55-aaaab'
     assert phid == '1'
-    assert dhid == 'O48N2'
+    assert dhid == '93652'
     assert dev.model == 'lc27t55'
     assert dev.depth == 0.1
     assert dev.placeholder.pallet == "l34"
@@ -640,7 +640,7 @@ def test_add_2_monitor(user3: UserClientFlask):
     assert dev.placeholder.id_device_supplier == "b1"
     assert dev.hid == 'monitor-samsung-lc27t55-aaaab'
     assert phid == '1'
-    assert dhid == 'O48N2'
+    assert dhid == '93652'
     assert dev.model == 'lc27t55'
     assert dev.placeholder.pallet == "l34"
 
@@ -717,7 +717,7 @@ def test_add_laptop(user3: UserClientFlask):
         dev.chid == '274f05421e4d394c5b3cd10266fed6f0500029b104b5db3521689bda589e3150'
     )
     assert phid == '1'
-    assert dhid == 'O48N2'
+    assert dhid == '93652'
 
     txt = f'Device "{typ}" placeholder with PHID {phid} and DHID {dhid} '
     txt += 'created successfully'
@@ -1891,7 +1891,7 @@ def test_edit_laptop(user3: UserClientFlask):
     assert dev.serial_number == 'aaaab'
     assert dev.model == 'lc27t55'
     assert phid == '1'
-    assert dhid == 'O48N2'
+    assert dhid == '93652'
 
     txt = f'Device "{typ}" placeholder with PHID {phid} and DHID {dhid} '
     txt += 'created successfully'