ir_sequence_data.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data noupdate="1">

        <record id="seq_scop_bordereau" model="ir.sequence">
            <field name="name">BORDEREAU Séquence</field>
            <field name="code">scop.bordereau</field>
            <field name="padding">4</field>
            <field name="prefix">CG%(year)s</field>
            <field name="company_id" ref="base.main_company"/>
        </record>

    </data>
</odoo>