pos/pos_tare/data/barcode_rule.xml

<?xml version="1.0"?>

<odoo noupdate="1">
    <record id="barcode_rule_tare" model="barcode.rule">
        <field name="name">Tare</field>
        <field name="barcode_nomenclature_id" ref="barcodes.default_barcode_nomenclature"/>
        <field name="sequence">81</field>
        <field name="type">tare</field>
        <field name="encoding">ean13</field>
        <field name="pattern">0700000{NNDDD}</field>
    </record>
</odoo>