<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data noupdate="1">
        <!-- Sequences for purchase.order --> 
        <record id="seq_type_purchase_order" model="ir.sequence.type">
            <field name="name">Purchase Order</field>
            <field name="code">purchase.order</field>
        </record>
        <record id="seq_purchase_order" model="ir.sequence">
            <field name="name">Purchase Order</field>
            <field name="code">purchase.order</field>
            <field name="prefix">PO</field>
            <field name="padding">3</field>
        </record>
    </data>
</openerp>

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data noupdate="1">
        <!-- Sequences for purchase.order --> 
        <record id="seq_type_purchase_order" model="ir.sequence.type">
            <field name="name">Purchase Order</field>
            <field name="code">purchase.order</field>
        </record>
        <record id="seq_purchase_order" model="ir.sequence">
            <field name="name">Purchase Order</field>
            <field name="code">purchase.order</field>
            <field name="prefix">PO</field>
            <field name="padding">5</field>
        </record>
    </data>
</openerp>

Change the default padding of the sequence for the Order Reference
[FIX] purchase: Change the default padding of the sequence for the Order Reference

bzr revid: stephane@openerp.com-20100216143858-8z5d3ug6s0gjfbaf