flectra/addons/purchase_requisition/security/purchase_tender.xml

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

    <record model="ir.rule" id="purchase_requisition_comp_rule">
        <field name="name">Purchase Requisition multi-company</field>
        <field name="model_id" ref="model_purchase_requisition"/>
        <field name="global" eval="True"/>
        <field name="domain_force">['|',('company_id','=',False),('company_id','child_of',[user.company_id.id])]</field>
    </record>

    <record model="ir.rule" id="purchase_requisition_line_comp_rule">
        <field name="name">Purchase requisition Line multi-company</field>
        <field name="model_id" ref="model_purchase_requisition_line"/>
        <field name="global" eval="True"/>
        <field name="domain_force">['|',('company_id','=',False),('company_id','child_of',[user.company_id.id])]</field>
    </record>

</data>
</flectra>