diff --git a/ereuse_devicehub/inventory/forms.py b/ereuse_devicehub/inventory/forms.py
index 969df88c..b1fdb645 100644
--- a/ereuse_devicehub/inventory/forms.py
+++ b/ereuse_devicehub/inventory/forms.py
@@ -317,6 +317,7 @@ class NewDeviceForm(FlaskForm):
     id_device_supplier = StringField('Id Supplier', [validators.Optional()])
     phid = StringField('Placeholder Hardware identity (Phid)', [validators.Optional()])
     pallet = StringField('Identity of pallet', [validators.Optional()])
+    components = TextAreaField('Components', [validators.Optional()])
     info = TextAreaField('Info', [validators.Optional()])
     serial_number = StringField('Seria Number', [validators.Optional()])
     model = StringField('Model', [validators.Optional()])
@@ -392,6 +393,7 @@ class NewDeviceForm(FlaskForm):
         self.phid.data = self._obj.placeholder.phid
         self.pallet.data = self._obj.placeholder.pallet
         self.info.data = self._obj.placeholder.info
+        self.components.data = self._obj.placeholder.components
         self.serial_number.data = self._obj.serial_number
         self.model.data = self._obj.model
         self.manufacturer.data = self._obj.manufacturer
@@ -414,6 +416,35 @@ class NewDeviceForm(FlaskForm):
             self.resolution.data = self._obj.resolution_width
             self.screen.data = self._obj.size
 
+        if self._obj.placeholder.is_abstract:
+            self.type.render_kw = disabled
+            self.amount.render_kw = disabled
+            self.id_device_supplier.render_kw = disabled
+            self.pallet.render_kw = disabled
+            self.info.render_kw = disabled
+            self.components.render_kw = disabled
+            self.serial_number.render_kw = disabled
+            self.model.render_kw = disabled
+            self.manufacturer.render_kw = disabled
+            self.appearance.render_kw = disabled
+            self.functionality.render_kw = disabled
+            self.brand.render_kw = disabled
+            self.generation.render_kw = disabled
+            self.version.render_kw = disabled
+            self.weight.render_kw = disabled
+            self.width.render_kw = disabled
+            self.height.render_kw = disabled
+            self.depth.render_kw = disabled
+            self.variant.render_kw = disabled
+            self.sku.render_kw = disabled
+            self.image.render_kw = disabled
+            if self._obj.type in ['Smartphone', 'Tablet', 'Cellphone']:
+                self.imei.render_kw = disabled
+                self.meid.render_kw = disabled
+            if self._obj.type == 'ComputerMonitor':
+                self.resolution.render_kw = disabled
+                self.screen.render_kw = disabled
+
     def validate(self, extra_validators=None):  # noqa: C901
         error = ["Not a correct value"]
         is_valid = super().validate(extra_validators)
@@ -567,6 +598,7 @@ class NewDeviceForm(FlaskForm):
                 'phid': self.phid.data or None,
                 'id_device_supplier': self.id_device_supplier.data,
                 'info': self.info.data,
+                'components': self.components.data,
                 'pallet': self.pallet.data,
                 'is_abstract': False,
             }
@@ -575,40 +607,47 @@ class NewDeviceForm(FlaskForm):
 
     def edit_device(self):
         self._obj.placeholder.phid = self.phid.data or self._obj.placeholder.phid
-        self._obj.placeholder.id_device_supplier = self.id_device_supplier.data or None
-        self._obj.placeholder.info = self.info.data or None
-        self._obj.placeholder.pallet = self.pallet.data or None
-        self._obj.placeholder.is_abstract = False
-        self._obj.model = self.model.data
-        self._obj.manufacturer = self.manufacturer.data
-        self._obj.serial_number = self.serial_number.data
-        self._obj.brand = self.brand.data
-        self._obj.version = self.version.data
-        self._obj.generation = self.generation.data
-        self._obj.sku = self.sku.data
-        self._obj.weight = self.weight.data
-        self._obj.width = self.width.data
-        self._obj.height = self.height.data
-        self._obj.depth = self.depth.data
-        self._obj.variant = self.variant.data
-        self._obj.image = self.image.data
+        if not self._obj.placeholder.is_abstract:
+            self._obj.placeholder.id_device_supplier = (
+                self.id_device_supplier.data or None
+            )
+            self._obj.placeholder.info = self.info.data or None
+            self._obj.placeholder.components = self.components.data or None
+            self._obj.placeholder.pallet = self.pallet.data or None
+            self._obj.model = self.model.data
+            self._obj.manufacturer = self.manufacturer.data
+            self._obj.serial_number = self.serial_number.data
+            self._obj.brand = self.brand.data
+            self._obj.version = self.version.data
+            self._obj.generation = self.generation.data
+            self._obj.sku = self.sku.data
+            self._obj.weight = self.weight.data
+            self._obj.width = self.width.data
+            self._obj.height = self.height.data
+            self._obj.depth = self.depth.data
+            self._obj.variant = self.variant.data
+            self._obj.image = self.image.data
 
-        if self._obj.type == 'ComputerMonitor':
-            self._obj.resolution_width = self.resolution.data
-            self._obj.size = self.screen.data
+            if self._obj.type == 'ComputerMonitor':
+                self._obj.resolution_width = self.resolution.data
+                self._obj.size = self.screen.data
 
-        if self._obj.type in ['Smartphone', 'Tablet', 'Cellphone']:
-            self._obj.imei = self.imei.data
-            self._obj.meid = self.meid.data
+            if self._obj.type in ['Smartphone', 'Tablet', 'Cellphone']:
+                self._obj.imei = self.imei.data
+                self._obj.meid = self.meid.data
 
-        if self.appearance.data and self.appearance.data != self._obj.appearance().name:
-            self._obj.set_appearance(self.appearance.data)
+            if (
+                self.appearance.data
+                and self.appearance.data != self._obj.appearance().name
+            ):
+                self._obj.set_appearance(self.appearance.data)
+
+            if (
+                self.functionality.data
+                and self.functionality.data != self._obj.functionality().name
+            ):
+                self._obj.set_functionality(self.functionality.data)
 
-        if (
-            self.functionality.data
-            and self.functionality.data != self._obj.functionality().name
-        ):
-            self._obj.set_functionality(self.functionality.data)
         placeholder_log = PlaceholdersLog(
             type="Update", source='Web form', placeholder=self._obj.placeholder
         )
@@ -1519,6 +1558,7 @@ class UploadPlaceholderForm(FlaskForm):
         self.path_snapshots = {}
         for i in data['Phid'].keys():
             placeholder = None
+            data['Phid'][i] = str(data['Phid'][i])
             if data['Phid'][i]:
                 placeholder = Placeholder.query.filter_by(phid=data['Phid'][i]).first()
 
@@ -1627,14 +1667,14 @@ class BindingForm(FlaskForm):
             self.phid.errors = [txt]
             return False
 
-        if self.device.placeholder:
-            txt = "This is not a device Workbench."
+        if self.device.is_abstract() != 'Abstract':
+            txt = "This is not a abstract device."
             self.phid.errors = [txt]
             return False
 
         if not self.placeholder:
             self.placeholder = Placeholder.query.filter(
-                Placeholder.phid == self.phid.data, Placeholder.owner == g.user
+                Placeholder.phid == self.phid.data.strip(), Placeholder.owner == g.user
             ).first()
 
         if not self.placeholder:
diff --git a/ereuse_devicehub/inventory/views.py b/ereuse_devicehub/inventory/views.py
index b286bf0f..6239d98c 100644
--- a/ereuse_devicehub/inventory/views.py
+++ b/ereuse_devicehub/inventory/views.py
@@ -37,7 +37,7 @@ from ereuse_devicehub.inventory.forms import (
 )
 from ereuse_devicehub.labels.forms import PrintLabelsForm
 from ereuse_devicehub.parser.models import PlaceholdersLog, SnapshotsLog
-from ereuse_devicehub.resources.action.models import Trade
+from ereuse_devicehub.resources.action.models import ActionDevice, Trade
 from ereuse_devicehub.resources.device.models import (
     Computer,
     DataStorage,
@@ -191,15 +191,34 @@ class BindingView(GenericMixin):
             .one()
         )
 
+        if device.is_abstract() != 'Abstract':
+            next_url = url_for('inventory.device_details', id=dhid)
+            messages.error('Device "{}" not is a Abstract device!'.format(dhid))
+            return flask.redirect(next_url)
+
+        if device.placeholder:
+            device = device.placeholder.binding
+
         if request.method == 'POST':
             old_placeholder = device.binding
             old_device_placeholder = old_placeholder.device
+
             if old_placeholder.is_abstract:
                 for plog in PlaceholdersLog.query.filter_by(
                     placeholder_id=old_placeholder.id
                 ):
                     db.session.delete(plog)
+
+                for ac in old_device_placeholder.actions:
+                    ac.devices.add(placeholder.device)
+                    ac.devices.remove(old_device_placeholder)
+                    for act in ac.actions_device:
+                        if act.device == old_device_placeholder:
+                            db.session.delete(act)
+
                 db.session.delete(old_device_placeholder)
+                for tag in list(old_device_placeholder.tags):
+                    tag.device = placeholder.device
 
             device.binding = placeholder
             db.session.commit()
@@ -209,11 +228,16 @@ class BindingView(GenericMixin):
             )
             return flask.redirect(next_url)
 
+        # import pdb; pdb.set_trace()
         self.context.update(
             {
                 'device': device.binding.device,
                 'placeholder': placeholder,
                 'page_title': 'Binding confirm',
+                'actions': list(device.binding.device.actions)
+                + list(placeholder.device.actions),
+                'tags': list(device.binding.device.tags)
+                + list(placeholder.device.tags),
             }
         )
 
@@ -242,10 +266,8 @@ class UnBindingView(GenericMixin):
         self.get_context()
 
         if request.method == 'POST':
-            self.clone_device(device)
-            next_url = url_for(
-                'inventory.device_details', id=placeholder.device.devicehub_id
-            )
+            new_device = self.clone_device(device)
+            next_url = url_for('inventory.device_details', id=new_device.devicehub_id)
             messages.success('Device "{}" unbind successfully!'.format(phid))
             return flask.redirect(next_url)
 
@@ -678,7 +700,13 @@ class ExportsView(View):
     def devices_list(self):
         """Get device query and put information in csv format."""
         data = StringIO()
-        cw = csv.writer(data, delimiter=';', lineterminator="\n", quotechar='"', quoting=csv.QUOTE_ALL)
+        cw = csv.writer(
+            data,
+            delimiter=';',
+            lineterminator="\n",
+            quotechar='"',
+            quoting=csv.QUOTE_ALL,
+        )
         first = True
 
         for device in self.find_devices():
@@ -693,7 +721,13 @@ class ExportsView(View):
     def metrics(self):
         """Get device query and put information in csv format."""
         data = StringIO()
-        cw = csv.writer(data, delimiter=';', lineterminator="\n", quotechar='"', quoting=csv.QUOTE_ALL)
+        cw = csv.writer(
+            data,
+            delimiter=';',
+            lineterminator="\n",
+            quotechar='"',
+            quoting=csv.QUOTE_ALL,
+        )
         first = True
         devs_id = []
         # Get the allocate info
@@ -757,7 +791,13 @@ class ExportsView(View):
 
     def lots_export(self):
         data = StringIO()
-        cw = csv.writer(data, delimiter=';', lineterminator="\n", quotechar='"', quoting=csv.QUOTE_ALL)
+        cw = csv.writer(
+            data,
+            delimiter=';',
+            lineterminator="\n",
+            quotechar='"',
+            quoting=csv.QUOTE_ALL,
+        )
 
         cw.writerow(
             [
@@ -827,7 +867,13 @@ class ExportsView(View):
 
     def devices_lots_export(self):
         data = StringIO()
-        cw = csv.writer(data, delimiter=';', lineterminator="\n", quotechar='"', quoting=csv.QUOTE_ALL)
+        cw = csv.writer(
+            data,
+            delimiter=';',
+            lineterminator="\n",
+            quotechar='"',
+            quoting=csv.QUOTE_ALL,
+        )
         head = [
             'DHID',
             'Lot Id',
diff --git a/ereuse_devicehub/migrations/versions/2b90b41a556a_add_owner_to_placeholder.py b/ereuse_devicehub/migrations/versions/2b90b41a556a_add_owner_to_placeholder.py
index c8a80e5a..20ef7319 100644
--- a/ereuse_devicehub/migrations/versions/2b90b41a556a_add_owner_to_placeholder.py
+++ b/ereuse_devicehub/migrations/versions/2b90b41a556a_add_owner_to_placeholder.py
@@ -5,6 +5,7 @@ Revises: 2b90b41a556a
 Create Date: 2022-07-27 14:40:15.513820
 
 """
+import citext
 import sqlalchemy as sa
 from alembic import context, op
 from sqlalchemy.dialects import postgresql
@@ -41,6 +42,11 @@ def upgrade():
         sa.Column('is_abstract', sa.Boolean(), nullable=True),
         schema=f'{get_inv()}',
     )
+    op.add_column(
+        'placeholder',
+        sa.Column('components', citext.CIText(), nullable=True),
+        schema=f'{get_inv()}',
+    )
     op.add_column(
         'placeholder',
         sa.Column('owner_id', postgresql.UUID(), nullable=True),
@@ -69,3 +75,4 @@ def downgrade():
     )
     op.drop_column('placeholder', 'owner_id', schema=f'{get_inv()}')
     op.drop_column('placeholder', 'is_abstract', schema=f'{get_inv()}')
+    op.drop_column('placeholder', 'components', schema=f'{get_inv()}')
diff --git a/ereuse_devicehub/parser/models.py b/ereuse_devicehub/parser/models.py
index 69cd574c..769e43a1 100644
--- a/ereuse_devicehub/parser/models.py
+++ b/ereuse_devicehub/parser/models.py
@@ -2,6 +2,7 @@ from citext import CIText
 from flask import g
 from sqlalchemy import BigInteger, Column, Sequence, SmallInteger
 from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import backref
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.action.models import Snapshot
@@ -41,6 +42,8 @@ class SnapshotsLog(Thing):
 
     def get_device(self):
         if self.snapshot:
+            if self.snapshot.device.binding:
+                return self.snapshot.device.binding.device.devicehub_id
             return self.snapshot.device.devicehub_id
 
         return ''
@@ -56,7 +59,11 @@ class PlaceholdersLog(Thing):
 
     placeholder_id = Column(BigInteger, db.ForeignKey(Placeholder.id), nullable=True)
     placeholder = db.relationship(
-        Placeholder, primaryjoin=placeholder_id == Placeholder.id
+        Placeholder,
+        backref=backref(
+            'placeholder_logs', lazy=True, cascade="all, delete-orphan", uselist=True
+        ),
+        primaryjoin=placeholder_id == Placeholder.id,
     )
     owner_id = db.Column(
         UUID(as_uuid=True),
diff --git a/ereuse_devicehub/resources/device/models.py b/ereuse_devicehub/resources/device/models.py
index 3b27b327..a50d1593 100644
--- a/ereuse_devicehub/resources/device/models.py
+++ b/ereuse_devicehub/resources/device/models.py
@@ -666,6 +666,20 @@ class Device(Thing):
             action = next(e for e in reversed(actions) if e.type == 'VisualTest')
             action.functionality_range = value
 
+    def is_abstract(self):
+        if self.placeholder:
+            if self.placeholder.is_abstract:
+                return 'Abstract'
+            if self.placeholder.binding:
+                return 'Twin'
+            return 'Real'
+        if self.binding:
+            if self.binding.is_abstract:
+                return 'Abstract'
+            return 'Twin'
+
+        return ''
+
     def is_status(self, action):
         from ereuse_devicehub.resources.device import states
 
@@ -869,6 +883,7 @@ class Placeholder(Thing):
     phid = Column(Unicode(), nullable=False, default=create_phid)
     pallet.comment = "used for identification where from where is this placeholders"
     info = db.Column(CIText())
+    components = Column(CIText())
     info.comment = "more info of placeholders"
     is_abstract = db.Column(Boolean, default=False)
     id_device_supplier = db.Column(CIText())
@@ -883,7 +898,9 @@ class Placeholder(Thing):
     )
     device = db.relationship(
         Device,
-        backref=backref('placeholder', lazy=True, cascade="all, delete-orphan", uselist=False),
+        backref=backref(
+            'placeholder', lazy=True, cascade="all, delete-orphan", uselist=False
+        ),
         primaryjoin=device_id == Device.id,
     )
     device_id.comment = "datas of the placeholder"
diff --git a/ereuse_devicehub/templates/inventory/binding.html b/ereuse_devicehub/templates/inventory/binding.html
index e26fb1bb..087b4e85 100644
--- a/ereuse_devicehub/templates/inventory/binding.html
+++ b/ereuse_devicehub/templates/inventory/binding.html
@@ -139,7 +139,7 @@
 
                   <br />
 
-                  {% if placeholder.device.actions or device.actions %}
+                  {% if actions %}
                   <h2>Actions</h2>
                   <table class="table table-hover">
                       <thead>
@@ -151,15 +151,37 @@
                       <tbody>
                           <tr>
                               <td class="table-success text-right">
-                                  {% for a in placeholder.device.actions %}
+                                  {% for a in actions %}
                                   * {{ a.t }}<br />
                                   {% endfor %}
                               </td>
                               <td class="table-danger">
-                                  {% for a in device.actions %}
-                                  * {{ a.t }}<br />
+                              </td>
+                          </tr>
+                      </tbody>
+                  </table>
+                  {% endif %}
+
+                  <br />
+
+                  {% if tags %}
+                  <h2>Tags</h2>
+                  <table class="table table-hover">
+                      <thead>
+                          <tr class="text-center">
+                              <th scope="col">Info to be Entered</th>
+                              <th scope="col">Info to be Decoupled</th>
+                          </tr>
+                      </thead>
+                      <tbody>
+                          <tr>
+                              <td class="table-success text-right">
+                                  {% for tag in tags %}
+                                  * {{ tag.id }}<br />
                                   {% endfor %}
                               </td>
+                              <td class="table-danger">
+                              </td>
                           </tr>
                       </tbody>
                   </table>
diff --git a/ereuse_devicehub/templates/inventory/device_create.html b/ereuse_devicehub/templates/inventory/device_create.html
index a8bcf221..cdf674a3 100644
--- a/ereuse_devicehub/templates/inventory/device_create.html
+++ b/ereuse_devicehub/templates/inventory/device_create.html
@@ -142,6 +142,19 @@
                       {% endif %}
                     </div>
 
+                    <div class="form-group mb-2">
+                      <label for="label" class="form-label">{{ form.components.label }}</label>
+                      {{ form.components(class_="form-control") }}
+                      <small class="text-muted form-text">Description of components</small>
+                      {% if form.components.errors %}
+                      <p class="text-danger">
+                        {% for error in form.components.errors %}
+                          {{ error }}<br/>
+                        {% endfor %}
+                      </p>
+                      {% endif %}
+                    </div>
+
                     <div class="from-group has-validation mb-2" id="Serial_number">
                       <label for="serialNumber" class="form-label">{{ form.serial_number.label }}</label>
                       {{ form.serial_number(class_="form-control") }}
diff --git a/ereuse_devicehub/templates/inventory/device_detail.html b/ereuse_devicehub/templates/inventory/device_detail.html
index bade9c63..9f46e787 100644
--- a/ereuse_devicehub/templates/inventory/device_detail.html
+++ b/ereuse_devicehub/templates/inventory/device_detail.html
@@ -62,13 +62,13 @@
               <button class="nav-link" data-bs-toggle="tab" data-bs-target="#components">Components</button>
             </li>
 
-           {% if device.binding %}
+           {% if device.is_abstract() == 'Abstract' %}
             <li class="nav-item">
               <button class="nav-link" data-bs-toggle="tab" data-bs-target="#binding">Binding</button>
             </li>
             {% endif %}
 
-           {% if device.placeholder and placeholder.binding %}
+           {% if device.is_abstract() == 'Twin' %}
             <li class="nav-item">
               <a class="nav-link" href="{{ url_for('inventory.unbinding', phid=placeholder.phid) }}">Unbinding</a>
             </li>
@@ -79,7 +79,21 @@
 
             <div class="tab-pane fade {% if active_binding %}profile-overview{% else %}show active{% endif %}" id="type">
               <h5 class="card-title">Details</h5>
-              {% if device.placeholder %}(<a href="{{ url_for('inventory.device_edit', id=device.devicehub_id)}}">edit</a>){% endif %}
+              {% if device.placeholder %}
+              <div class="row mb-3">
+                <div class="col-lg-3 col-md-4 label ">
+                  (<a href="{{ url_for('inventory.device_edit', id=device.devicehub_id)}}">Edit Device</a>)
+                </div>
+                <div class="col-lg-9 col-md-8">{{ device.is_abstract() }}</div>
+              </div>
+              {% endif %}
+
+              {% if device.placeholder %}
+              <div class="row">
+                <div class="col-lg-3 col-md-4 label ">Phid</div>
+                <div class="col-lg-9 col-md-8">{{ device.placeholder.phid }}</div>
+              </div>
+              {% endif %}
 
               <div class="row">
                 <div class="col-lg-3 col-md-4 label ">Type</div>
@@ -88,17 +102,17 @@
 
               <div class="row">
                 <div class="col-lg-3 col-md-4 label">Manufacturer</div>
-                <div class="col-lg-9 col-md-8">{{ device.manufacturer }}</div>
+                <div class="col-lg-9 col-md-8">{{ device.manufacturer or ''}}</div>
               </div>
 
               <div class="row">
                 <div class="col-lg-3 col-md-4 label">Model</div>
-                <div class="col-lg-9 col-md-8">{{ device.model }}</div>
+                <div class="col-lg-9 col-md-8">{{ device.model or ''}}</div>
               </div>
 
               <div class="row">
                 <div class="col-lg-3 col-md-4 label">Serial Number</div>
-                <div class="col-lg-9 col-md-8">{{ device.serial_number }}</div>
+                <div class="col-lg-9 col-md-8">{{ device.serial_number or ''}}</div>
               </div>
             </div>
 
@@ -208,6 +222,7 @@
 
             <div class="tab-pane fade profile-overview" id="components">
               <h5 class="card-title">Components Details</h5>
+              {% if device.binding %}
               <div class="list-group col-6">
                 {% for component in device.components|sort(attribute='type') %}
                 <div class="list-group-item">
@@ -227,8 +242,13 @@
                 </div>
                 {% endfor %}
               </div>
+              {% else %}
+              <div class="col-6">
+                  {{ device.placeholder.components or '' }}
+              </div>
+              {% endif %}
             </div>
-            {% if placeholder.binding %}
+            {% if device.is_abstract() %}
             <div class="tab-pane fade {% if active_binding %}show active{% else %}profile-overview{% endif %}" id="binding">
               <h5 class="card-title">Binding</h5>
               <div class="list-group col-6">
@@ -238,7 +258,7 @@
                 </p>
               </div>
               <div class="list-group col-6">
-                  <form action="{{ url_for('inventory.device_details', id=placeholder.binding.devicehub_id) }}" method="post">
+                  <form action="{{ url_for('inventory.device_details', id=device.devicehub_id) }}" method="post">
                   {{ form_binding.csrf_token }}
                   {% for field in form_binding %}
                   {% if field != form_binding.csrf_token %}
diff --git a/ereuse_devicehub/templates/inventory/device_list.html b/ereuse_devicehub/templates/inventory/device_list.html
index cd8f35a2..b2ed449d 100644
--- a/ereuse_devicehub/templates/inventory/device_list.html
+++ b/ereuse_devicehub/templates/inventory/device_list.html
@@ -402,7 +402,7 @@
                       <th scope="col">Title</th>
                       <th scope="col">DHID</th>
                       <th scope="col">PHID</th>
-                      <th scope="col">Is Abstract</th>
+                      <th scope="col">Type</th>
                       <th scope="col">Unique Identifiers</th>
                       <th scope="col">Lifecycle Status</th>
                       <th scope="col">Allocated Status</th>
@@ -448,7 +448,7 @@
                           {{ dev.binding and dev.binding.phid or dev.placeholder and dev.placeholder.phid  or '' }}
                       </td>
                       <td>
-                          {{ dev.binding and dev.binding.is_abstract and '✓' or dev.placeholder and dev.placeholder.is_abstract and '✓' or '' }}
+                          {{ dev.is_abstract() }}
                       </td>
                       <td>
                         {% for t in dev.tags | sort(attribute="id") %}