Dear All,

Odoo V16

I try to inherit a wizard but I have the below error: 

TypeError: transforms the transient model 'sale.advance.payment.inv' into a non-transient model. That class should either inherit from TransientModel, or set a different '_name'. 

I don't inherit XML file, I want only to override the function.

I try to inherit this code:

class SaleAdvancePaymentInv(models.TransientModel):
    ​​ _name = 'sale.advance.payment.inv'
	​_description = "Sales Advance Payment Invoice"

	​def create_invoices(self):
	​​​​​self._create_invoices(self.sale_order_ids)
			​​​​...​
        return {'type': 'ir.actions.act_window_close'}
	​

My code:

class SaleAdvancePaymentInvInherited(models.TransientModel):
	​# Also, I try without using _name
	​_name = 'sale.advance.payment.inv.inherited'
	​_inherit = "sale.advance.payment.inv"

	​def create_invoices(self):
		​​self._create_invoices(self.sale_order_ids)

	​	​logging.info('Hello function')
	​	​...
	​	​return {'type': 'ir.actions.act_window_close'}