diff --git a/ereuse_devicehub/migrations/versions/3ac2bc1897ce_adding_weight_to_tradedocuments.py b/ereuse_devicehub/migrations/versions/3ac2bc1897ce_adding_weight_to_tradedocuments.py
new file mode 100644
index 00000000..19f4571c
--- /dev/null
+++ b/ereuse_devicehub/migrations/versions/3ac2bc1897ce_adding_weight_to_tradedocuments.py
@@ -0,0 +1,47 @@
+"""adding weight to tradedocuments
+
+Revision ID: 3ac2bc1897ce
+Revises: 3a3601ac8224
+Create Date: 2021-08-03 16:28:38.719686
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from alembic import context
+from sqlalchemy.dialects import postgresql
+
+
+# revision identifiers, used by Alembic.
+revision = '3ac2bc1897ce'
+down_revision = '7ecb8ff7abad'
+branch_labels = None
+depends_on = None
+
+
+def get_inv():
+    INV = context.get_x_argument(as_dictionary=True).get('inventory')
+    if not INV:
+        raise ValueError("Inventory value is not specified")
+    return INV
+
+
+def upgrade():
+    op.add_column("trade_document", sa.Column("weight", sa.Float(decimal_return_scale=2), nullable=True), schema=f'{get_inv()}') 
+
+    # DataWipeDocument table
+    op.create_table('move_on_document',
+                    sa.Column('id', postgresql.UUID(as_uuid=True), nullable=False),
+                    sa.Column("weight", sa.Float(decimal_return_scale=2), nullable=True),
+                    sa.Column('container_from_id', sa.BigInteger(), nullable=False),
+                    sa.Column('container_to_id', sa.BigInteger(), nullable=False),
+                    sa.ForeignKeyConstraint(['container_from_id'], [f'{get_inv()}.trade_document.id'], ),
+                    sa.ForeignKeyConstraint(['container_to_id'], [f'{get_inv()}.trade_document.id'], ),
+                    sa.ForeignKeyConstraint(['id'], [f'{get_inv()}.action.id'], ),
+                    sa.PrimaryKeyConstraint('id'),
+                    schema=f'{get_inv()}'
+                    )
+
+
+def downgrade():
+    op.drop_column('trade_document', 'weight', schema=f'{get_inv()}')
+    op.drop_table('move_on_document', schema=f'{get_inv()}')
diff --git a/ereuse_devicehub/resources/action/__init__.py b/ereuse_devicehub/resources/action/__init__.py
index 09e27245..e70bd18b 100644
--- a/ereuse_devicehub/resources/action/__init__.py
+++ b/ereuse_devicehub/resources/action/__init__.py
@@ -333,3 +333,8 @@ class MigrateToDef(ActionDef):
 class MigrateFromDef(ActionDef):
     VIEW = None
     SCHEMA = schemas.MigrateFrom
+
+
+class MoveOnDocumentDef(ActionDef):
+    VIEW = None
+    SCHEMA = schemas.MoveOnDocument
diff --git a/ereuse_devicehub/resources/action/models.py b/ereuse_devicehub/resources/action/models.py
index 23ddc0bf..64affa92 100644
--- a/ereuse_devicehub/resources/action/models.py
+++ b/ereuse_devicehub/resources/action/models.py
@@ -62,6 +62,15 @@ _sorted_actions = {
     'order_by': lambda: Action.end_time,
     'collection_class': SortedSet
 }
+
+
+def sorted_actions_by(data):
+    return {
+        'order_by': lambda: data,
+        'collection_class': SortedSet
+    }
+
+
 """For db.backref, return the actions sorted by end_time."""
 
 
@@ -1684,6 +1693,35 @@ class MakeAvailable(ActionWithMultipleDevices):
     pass
 
 
+class MoveOnDocument(JoinedTableMixin, ActionWithMultipleTradeDocuments):
+    """Action than certify one movement of some indescriptible material of
+    one container to an other."""
+
+    weight = db.Column(db.Float(nullable=True))
+    weight.comment = """Weight than go to recycling"""
+    container_from_id = db.Column(
+        db.BigInteger,
+        db.ForeignKey('trade_document.id'),
+        nullable=False
+    )
+    container_from = db.relationship(
+        'TradeDocument',
+        primaryjoin='MoveOnDocument.container_from_id == TradeDocument.id',
+    )
+    container_from_id.comment = """This is the trade document used as container in a incoming lot"""
+
+    container_to_id = db.Column(
+        db.BigInteger,
+        db.ForeignKey('trade_document.id'),
+        nullable=False
+    )
+    container_to = db.relationship(
+        'TradeDocument',
+        primaryjoin='MoveOnDocument.container_to_id == TradeDocument.id',
+    )
+    container_to_id.comment = """This is the trade document used as container in a outgoing lot"""
+
+
 class Migrate(JoinedTableMixin, ActionWithMultipleDevices):
     """Moves the devices to a new database/inventory. Devices cannot be
     modified anymore at the previous database.
diff --git a/ereuse_devicehub/resources/action/schemas.py b/ereuse_devicehub/resources/action/schemas.py
index 02065081..0c69aad9 100644
--- a/ereuse_devicehub/resources/action/schemas.py
+++ b/ereuse_devicehub/resources/action/schemas.py
@@ -2,7 +2,7 @@ import copy
 from datetime import datetime, timedelta
 from dateutil.tz import tzutc
 from flask import current_app as app, g
-from marshmallow import Schema as MarshmallowSchema, ValidationError, fields as f, validates_schema, post_load
+from marshmallow import Schema as MarshmallowSchema, ValidationError, fields as f, validates_schema, pre_load, post_load
 from marshmallow.fields import Boolean, DateTime, Decimal, Float, Integer, Nested, String, \
     TimeDelta, UUID
 from marshmallow.validate import Length, OneOf, Range
@@ -25,6 +25,7 @@ from ereuse_devicehub.resources.models import STR_BIG_SIZE, STR_SIZE
 from ereuse_devicehub.resources.schemas import Thing
 from ereuse_devicehub.resources.user import schemas as s_user
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.resources.tradedocument.models import TradeDocument
 
 
 class Action(Thing):
@@ -869,3 +870,31 @@ class MigrateTo(Migrate):
 
 class MigrateFrom(Migrate):
     __doc__ = m.MigrateFrom.__doc__
+
+
+class MoveOnDocument(Action):
+    __doc__ = m.MoveOnDocument.__doc__
+    weight = Integer()
+    container_from = NestedOn('TradeDocument', only_query='id')
+    container_to = NestedOn('TradeDocument', only_query='id')
+
+    @pre_load
+    def extract_container(self, data):
+        id_hash = data['container_to']
+        docs = TradeDocument.query.filter_by(owner=g.user, file_hash=id_hash).all()
+        if len(docs) > 1:
+            txt = 'This document it is associated in more than one lot'
+            raise ValidationError(txt)
+
+        if len(docs) < 1:
+            txt = 'This document not exist'
+            raise ValidationError(txt)
+        data['container_to'] = docs[0].id
+
+    @post_load
+    def adding_documents(self, data):
+        """Adding action in the 2 TradeDocuments"""
+        docs = OrderedSet()
+        docs.add(data['container_to'])
+        docs.add(data['container_from'])
+        data['documents'] = docs
diff --git a/ereuse_devicehub/resources/action/views/documents.py b/ereuse_devicehub/resources/action/views/documents.py
index e1f685b5..d099cba4 100644
--- a/ereuse_devicehub/resources/action/views/documents.py
+++ b/ereuse_devicehub/resources/action/views/documents.py
@@ -3,7 +3,7 @@ import copy
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.action.models import DataWipe
 from ereuse_devicehub.resources.documents.models import DataWipeDocument
-from ereuse_devicehub.resources.device.models import DataStorage 
+from ereuse_devicehub.resources.device.models import DataStorage
 from ereuse_devicehub.resources.documents.schemas import DataWipeDocument as sh_document
 from ereuse_devicehub.resources.hash_reports import ReportHash
 
@@ -31,14 +31,14 @@ class ErasedView():
         doc_data = schema.load(data)
         self.document = DataWipeDocument(**doc_data)
         db.session.add(self.document)
-        
+
         db_hash = ReportHash(hash3=self.document.file_hash)
         db.session.add(db_hash)
 
     def insert_action(self, data):
         [data.pop(x, None) for x in ['url', 'documentId', 'filename', 'hash', 'software', 'success']]
         self.data = self.schema.load(data)
-       
+
         for dev in self.data['devices']:
             if not hasattr(dev, 'components'):
                 continue
diff --git a/ereuse_devicehub/resources/documents/documents.py b/ereuse_devicehub/resources/documents/documents.py
index 98cdf956..f6de8884 100644
--- a/ereuse_devicehub/resources/documents/documents.py
+++ b/ereuse_devicehub/resources/documents/documents.py
@@ -434,3 +434,4 @@ class DocumentDef(Resource):
                                                   auth=app.auth)
         wbconf_view = app.auth.requires_auth(wbconf_view)
         self.add_url_rule('/wbconf/<string:wbtype>', view_func=wbconf_view, methods=get)
+
diff --git a/ereuse_devicehub/resources/documents/models.py b/ereuse_devicehub/resources/documents/models.py
index a2b98511..9c557b3e 100644
--- a/ereuse_devicehub/resources/documents/models.py
+++ b/ereuse_devicehub/resources/documents/models.py
@@ -1,14 +1,23 @@
-from citext import CIText 
 from flask import g
+from citext import CIText 
+from sortedcontainers import SortedSet
 from sqlalchemy import BigInteger, Column, Sequence, Unicode, Boolean, ForeignKey
 from sqlalchemy.ext.declarative import declared_attr
 from sqlalchemy.dialects.postgresql import UUID
-from teal.db import URL
+from sqlalchemy.orm import backref
+from teal.db import CASCADE_OWN, URL
+
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.user.models import User
 from ereuse_devicehub.resources.models import Thing, STR_SM_SIZE
 
 
+_sorted_documents = {
+    'order_by': lambda: Document.created,
+    'collection_class': SortedSet
+}
+
+
 class Document(Thing):
     """This represent a generic document."""
 
diff --git a/ereuse_devicehub/resources/documents/schemas.py b/ereuse_devicehub/resources/documents/schemas.py
index 6500777a..d62cec41 100644
--- a/ereuse_devicehub/resources/documents/schemas.py
+++ b/ereuse_devicehub/resources/documents/schemas.py
@@ -1,7 +1,10 @@
-from marshmallow.fields import DateTime, Integer, validate, Boolean
+from marshmallow.fields import DateTime, Integer, validate, Boolean, Float
 from marshmallow import post_load
+from marshmallow.validate import Range
 from teal.marshmallow import SanitizedStr, URL
+from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources.schemas import Thing
+from ereuse_devicehub.resources.tradedocument.models import TradeDocument
 from ereuse_devicehub.resources.documents import models as m
 
 
diff --git a/ereuse_devicehub/resources/tradedocument/models.py b/ereuse_devicehub/resources/tradedocument/models.py
index 9c743244..36ae370a 100644
--- a/ereuse_devicehub/resources/tradedocument/models.py
+++ b/ereuse_devicehub/resources/tradedocument/models.py
@@ -1,4 +1,3 @@
-import copy
 from citext import CIText
 from flask import g
 
@@ -71,6 +70,8 @@ class TradeDocument(Thing):
     file_hash.comment = """This is the hash of the file produced from frontend."""
     url = db.Column(URL())
     url.comment = """This is the url where resides the document."""
+    weight = db.Column(db.Float(nullable=True))
+    weight.comment = """This is the weight of one container than this document express."""
 
     __table_args__ = (
         db.Index('document_id', id, postgresql_using='hash'),
@@ -100,9 +101,8 @@ class TradeDocument(Thing):
         revoke = 'Revoke'
         revoke_pending = 'Revoke Pending'
         confirm_revoke = 'Document Revoked'
-        
         if not self.actions:
-            return 
+            return
 
         ac = self.actions[-1]
 
@@ -110,7 +110,7 @@ class TradeDocument(Thing):
             # can to do revoke_confirmed
             return confirm_revoke
 
-        if ac.type == 'RevokeDocument': 
+        if ac.type == 'RevokeDocument':
             if ac.user == g.user:
                 # can todo revoke_pending
                 return revoke_pending
@@ -130,9 +130,22 @@ class TradeDocument(Thing):
                 # can to do revoke
                 return double_confirm
 
-    def _warning_actions(self, actions):
-        return sorted(ev for ev in actions if ev.severity >= Severity.Warning)
+    @property
+    def total_weight(self):
+        """Return all weight than this container have."""
+        weight = self.weight or 0
+        for x in self.actions:
+            if not x.type == 'MoveOnDocument' or not x.weight:
+                continue
+            if self == x.container_from:
+                continue
+            weight += x.weight
 
+        return weight
+
+    def _warning_actions(self, actions):
+        """Show warning actions"""
+        return sorted(ev for ev in actions if ev.severity >= Severity.Warning)
 
     def __lt__(self, other):
         return self.id < other.id
diff --git a/ereuse_devicehub/resources/tradedocument/schemas.py b/ereuse_devicehub/resources/tradedocument/schemas.py
index fab95dc4..99aa9ab6 100644
--- a/ereuse_devicehub/resources/tradedocument/schemas.py
+++ b/ereuse_devicehub/resources/tradedocument/schemas.py
@@ -1,4 +1,4 @@
-from marshmallow.fields import DateTime, Integer, validate
+from marshmallow.fields import DateTime, Integer, Float, validate
 from teal.marshmallow import SanitizedStr, URL
 # from marshmallow import ValidationError, validates_schema
 
@@ -29,3 +29,5 @@ class TradeDocument(Thing):
     url = URL(description=m.TradeDocument.url.comment)
     lot = NestedOn('Lot', only_query='id', description=m.TradeDocument.lot.__doc__)
     trading = SanitizedStr(dump_only=True, description='')
+    weight = Float(required=False, description=m.TradeDocument.weight.comment)
+    total_weight = Float(required=False, description=m.TradeDocument.weight.comment)
diff --git a/tests/test_action.py b/tests/test_action.py
index 7cd3e09d..f82d0bac 100644
--- a/tests/test_action.py
+++ b/tests/test_action.py
@@ -28,6 +28,7 @@ from ereuse_devicehub.resources.action import models
 from ereuse_devicehub.resources.device import states
 from ereuse_devicehub.resources.device.models import Desktop, Device, GraphicCard, HardDrive, \
     RamModule, SolidStateDrive
+from ereuse_devicehub.resources.tradedocument.models import TradeDocument
 from ereuse_devicehub.resources.enums import ComputerChassis, Severity, TestDataStorageLength
 from tests import conftest
 from tests.conftest import create_user, file, yaml2json, json_encode
@@ -2661,3 +2662,64 @@ def test_action_web_erase(user: UserClient, client: Client):
     assert "alert alert-info" in response
     assert "100% coincidence." in response
     assert not "alert alert-danger" in response
+
+
+@pytest.mark.mvp
+@pytest.mark.usefixtures(conftest.app_context.__name__)
+def test_moveOnDocument(user: UserClient, user2: UserClient):
+    lotIn, _ = user.post({'name': 'MyLotIn'}, res=Lot)
+    lotOut, _ = user.post({'name': 'MyLotOut'}, res=Lot)
+    url = 'http://www.ereuse.org/apapaapaapaapaapaapaapaapaapaapapaapaapaapaapaapaapaapaapaapapaapaapaapaapaapaapaapaapaapaaaa',
+    request_post1 = {
+        'filename': 'test.pdf',
+        'hash': 'bbbbbbbb',
+        'url': url,
+        'weight': 150,
+        'lot': lotIn['id']
+    }
+    tradedocument_from, _ = user.post(res=TradeDocument, data=request_post1)
+    id_hash = 'aaaaaaaaa'
+    request_post2 = {
+        'filename': 'test.pdf',
+        'hash': id_hash,
+        'url': url,
+        'weight': 0,
+        'lot': lotOut['id']
+    }
+    tradedocument_to, _ = user.post(res=TradeDocument, data=request_post2)
+
+    request_trade = {
+        'type': 'Trade',
+        'devices': [],
+        'userFromEmail': user2.email,
+        'userToEmail': user.email,
+        'price': 10,
+        'date': "2020-12-01T02:00:00+00:00",
+        'lot': lotIn['id'],
+        'confirms': True,
+    }
+
+    user.post(res=models.Action, data=request_trade)
+
+    description = 'This is a good description'
+    request_moveOn = {
+        'type': 'MoveOnDocument',
+        'weight': 15,
+        'container_from': tradedocument_from['id'],
+        'container_to': id_hash,
+        'description': description
+    }
+    doc, _ = user.post(res=models.Action, data=request_moveOn)
+
+    assert doc['weight'] == request_moveOn['weight']
+    assert doc['container_from']['id'] == tradedocument_from['id']
+    assert doc['container_to']['id'] == tradedocument_to['id']
+
+    mvs= models.MoveOnDocument.query.filter().first()
+    trade_from = TradeDocument.query.filter_by(id=tradedocument_from['id']).one()
+    trade_to = TradeDocument.query.filter_by(id=tradedocument_to['id']).one()
+    assert trade_from in mvs.documents
+    assert trade_to in mvs.documents
+    assert description == mvs.description
+    tradedocument_to, _ = user.post(res=TradeDocument, data=request_post2)
+    user.post(res=models.Action, data=request_moveOn, status=422)
diff --git a/tests/test_basic.py b/tests/test_basic.py
index c04e8fb6..c3dc44d3 100644
--- a/tests/test_basic.py
+++ b/tests/test_basic.py
@@ -122,4 +122,4 @@ def test_api_docs(client: Client):
         'scheme': 'basic',
         'name': 'Authorization'
     }
-    assert len(docs['definitions']) == 126
+    assert len(docs['definitions']) == 127
diff --git a/tests/test_documents.py b/tests/test_documents.py
index 28965c77..240fa738 100644
--- a/tests/test_documents.py
+++ b/tests/test_documents.py
@@ -16,6 +16,7 @@ from ereuse_devicehub.devicehub import Devicehub
 from ereuse_devicehub.resources.user.models import Session
 from ereuse_devicehub.resources.action.models import Snapshot, Allocate, Live
 from ereuse_devicehub.resources.documents import documents
+from ereuse_devicehub.resources.tradedocument.models import TradeDocument
 from ereuse_devicehub.resources.device import models as d
 from ereuse_devicehub.resources.lot.models import Lot
 from ereuse_devicehub.resources.tag.model import Tag
@@ -677,3 +678,41 @@ def test_get_wbconf(user: UserClient):
     assert token in env
     user.user['token'] = token
     snapshot, _ = user.post(file('basic.snapshot'), res=Snapshot)
+
+
+@pytest.mark.mvp
+@pytest.mark.usefixtures(conftest.app_context.__name__)
+def test_trade_documents(user: UserClient):
+    """Tests upload one document"""
+
+    lot, _ = user.post({'name': 'MyLot'}, res=Lot)
+    request_post = {
+        'filename': 'test.pdf',
+        'hash': 'bbbbbbbb',
+        'url': 'http://www.ereuse.org/',
+        'lot': lot['id']
+    }
+    doc, _ = user.post(res=TradeDocument, data=request_post)
+    assert doc['filename'] == request_post['filename']
+    assert doc['url'] == request_post['url']
+    assert doc['hash'] == request_post['hash']
+    assert doc['lot']['name'] == lot['name']
+
+
+@pytest.mark.mvp
+@pytest.mark.usefixtures(conftest.app_context.__name__)
+def test_trade_documents_with_weight(user: UserClient):
+    """Tests upload one document"""
+
+    lot, _ = user.post({'name': 'MyLot'}, res=Lot)
+    # long url
+    url = 'http://www.ereuse.org/apapaapaapaapaapaapaapaapaapaapapaapaapaapaapaapaapaapaapaapapaapaapaapaapaapaapaapaapaapaaaa',
+    request_post = {
+        'filename': 'test.pdf',
+        'hash': 'bbbbbbbb',
+        'url': url,
+        'weight': 15,
+        'lot': lot['id']
+    }
+    doc, _ = user.post(res=TradeDocument, data=request_post)
+    assert doc['weight'] == request_post['weight']