11.0

data/purchase_data.xml

+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <data noupdate="1">
+
+        <record id="seq_opened_purchase_order" model="ir.sequence">
+            <field name="name">Purchase Order</field>
+            <field name="code">opened.purchase.order</field>
+            <field name="prefix">POA</field>
+            <field name="padding">5</field>
+            <field name="company_id" eval="False"/>
+        </record>
+
+    </data>
+</odoo>