I just added a custom related field in sale order line
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Now the issue is that while adding section or note in order line this custom field is not allowing me to do so. Because when I erase this field everything is working fine for me.
class SaleOrderLineInherit(models.Model): _inherit = ['sale.order.line'] tran_service_type = fields.Many2one(related='product_id.product_tmpl_id.tran_service_type', string='TS Pairs')