[ADD] accounting: configuration of silverfin integration

task-2918697

closes odoo/documentation#3357

X-original-commit: 7f6535dcc8
Signed-off-by: Castillo Jonathan (jcs) <jcs@odoo.com>

content/applications/finance/accounting/reporting.rst

@@ -9,3 +9,4 @@ Reporting
 
    reporting/overview
    reporting/declarations
+   reporting/silverfin

content/applications/finance/accounting/reporting/silverfin.rst

@@ -0,0 +1,41 @@
+=====================
+Silverfin integration
+=====================
+
+`Silverfin <https://www.silverfin.com>`_ is a third-party service provider that offers a cloud
+platform for accountants.
+
+Odoo and Silverfin provide an integration to automate the synchronisation of data.
+
+Configuration
+=============
+
+To configure this integration, you need to input the following data into your Silverfin account:
+
+- user's email address
+- :ref:`Odoo API key <silverfin/api-key>`
+- URL of the Odoo database
+- name of your Odoo database
+
+.. _silverfin/api-key:
+
+Odoo API key
+------------
+
+To create a new API key, navigate to `Odoo's website <https://www.odoo.com>`_  and sign in with your
+administrator account. Next, open `your account security settings in developer mode
+<https://www.odoo.com/my/security?debug=1>`_, click on :guilabel:`New API Key`, confirm your
+password, give a descriptive name to your new key, and copy the new API key.
+
+.. important::
+   - You can copy the API key only at its creation, and you cannot retrieve it later.
+   - The API key provides full access to your user account. Store it securely.
+   - If you need it again, create a new API key.
+   - You can delete your existing API keys from this same page.
+
+.. image:: silverfin/api-key.png
+   :align: center
+   :alt: creation of an Odoo external API key for an integration with Silverfin
+
+.. seealso::
+   :doc:`/developer/api/external_api`