cooperative-market/beesdoo_purchase/models/account_invoice.py

from odoo import api, fields, models, _


class AccountInvoice(models.Model):
    _inherit = "account.invoice"

    def _prepare_invoice_line_from_po_line(self, line):
        """ Override parent's method to invert Purchase Order Reference on invoice line"""
        invoice_line = super(
            AccountInvoice, self
        )._prepare_invoice_line_from_po_line(line)
        if self.user_has_groups(
            "beesdoo_purchase." "group_invert_po_ref_on_inv_line"
        ):
            invoice_line["name"] = line.name + ": " + line.order_id.name
        return invoice_line