Hi,

If you are looking to create a journal entry you can directly call the create method of the corresponding model and pass the values into it.

Please see this sample code,

debit_vals = {
    'name': self.reason,
    'debit': abs(self.amount),
    'credit': 0.0,
    'account_id': self.debit_account_id.id,
    'tax_line_id': adjustment_type == 'debit' and self.tax_id.id or False,
}
credit_vals = {
    'name': self.reason,
    'debit': 0.0,
    'credit': abs(self.amount),
    'account_id': self.credit_account_id.id,
    'tax_line_id': adjustment_type == 'credit' and self.tax_id.id or False,
}
vals = {
    'journal_id': self.journal_id.id,
    'date': self.date,
    'state': 'draft',
    'line_ids': [(0, 0, debit_vals), (0, 0, credit_vals)]
}
move = self.env['account.move'].create(vals)

Thanks