oca-financial/odoo-bringout-oca-account-invoicing-account_billing/account_billing/data/account_billing_sequence.xml

<odoo noupdate="1">
    <record id="seq_account_customer_billing" model="ir.sequence">
        <field name="name">Billing sequence</field>
        <field name="code">account.customer.billing</field>
        <field name="prefix">CUST.BIL/%(year)s/</field>
        <field eval="1" name="number_next" />
        <field eval="1" name="number_increment" />
        <field eval="True" name="use_date_range" />
        <field eval="False" name="company_id" />
        <field name="padding">5</field>
    </record>
    <record id="seq_account_supplier_billing" model="ir.sequence">
        <field name="name">Supplier Billing sequence</field>
        <field name="code">account.supplier.billing</field>
        <field name="prefix">SUPP.BIL/%(year)s/</field>
        <field eval="1" name="number_next" />
        <field eval="1" name="number_increment" />
        <field eval="True" name="use_date_range" />
        <field eval="False" name="company_id" />
        <field name="padding">5</field>
    </record>
</odoo>