Hi,

Yes it is possible. But first you need to bring that to the picking form view. Then you can call it in report.

A many2one field relation is already there called "sale_id", so we just need to add a related field in stock.picking

You may try the following:

1. Inherit stock.picking and add a related field

class stock_picking(models.Model):
    _inherit="stock.picking"
    
    client_ref = fields.Char(related="sale_id.client_order_ref", string="Client Description")

2. Call that in picking form view

<record id="view_picking_form_inherited" model="ir.ui.view">
            <field name="name">view.picking.form.view.inherited</field>
            <field name="model">stock.picking</field>
            <field name="inherit_id" ref="stock.view_picking_form"/>
            <field name="arch" type="xml">
                <field name="partner_id" position="after">
                	<field name="client_ref" />
                </field>
            </field>
     </record>

3. call it in picking report by inheriting the template

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <template id="report_picking_inherited" inherit_id="stock.report_picking">
            <xpath expr="//t/div/table[1]/thead/tr/th[1]" position="after">
                <th>Client Reference</th>
               
            </xpath>
            
            <xpath expr="//t/div/table[1]/tbody/tr/td[1]" position="after">
                <td>
                      <span t-field="o.client_ref"/>
                </td>
               
            </xpath>
       </template>
    </data>
</openerp>

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