Configuration:
- Company Currency: MXN
- Tax 16%.
- Multicurrency, MXN and USD.
- Decimal precision: 4
- Currency Data:
MXN: rate 1.0
USD rates

| Database time | rate | Local time (Mexico) | 
| --- | --- | --- |
| 2016-09-09 00:00:01 | 0.054440 | 2016-09-08 17:00:01 |
| 2016-10-11 00:00:01 | 0.051815 | 2016-10-10 17:00:01 |

Steps to reproduce:

1. Create an invoice for 600 USD  + tax (16%) with date 09/09/16 (September 9, 2016) and when you validate in the journal entry is $12,784.7172 MXN.
3. Create a bank statement in MXN and add a line with date 11/10/16 (October 11, 2016) and amount $13,372.80 MXN.
4. When reconcile select the invoice and there is a difference ($588.0828 MXN) add a line with the difference and select an account for the difference. 
<img width="607" alt="captura de pantalla 2016-11-04 a la s 17 23 26" src="https://cloud.githubusercontent.com/assets/6758279/20025385/749605a2-a2b3-11e6-8b1a-4e9fbf1521ed.png">

**Note that the amount of difference is $588.08 in when you select the account**

5. Click on reconcile.

Expected behavior:
- Reconcile the invoice and create account move.

Current behavior:
- Raise an error  `Wrong credit or debit value in accounting entry !`

![captura de pantalla 2016-11-01 a la s 19 18 52](https://cloud.githubusercontent.com/assets/6758279/19913537/1c272866-a069-11e6-9b06-5851681c7fa5.png)

addons/account/models/account_move.py
invoice = self._context.get('invoice', False)
        self._post_validate()
        for move in self:
            move.line_ids.create_analytic_lines()
            if move.name == '/':
                new_name = False
                journal = move.journal_id
                if invoice and invoice.move_name and invoice.move_name != '/':
                    new_name = invoice.move_name
                else:
                    if journal.sequence_id:
                        
                        sequence = journal.sequence_id
                        if invoice and invoice.type in ['out_refund', 'in_refund'] and journal.refund_sequence:
                            sequence = journal.refund_sequence_id
                        new_name = sequence.with_context(ir_sequence_date=move.date).next_by_id()
                    else:
                        raise UserError(_('Please define a sequence on the journal.'))
                if new_name:
                    move.name = new_name
        return self.write({'state': 'posted'})
    @api.multi
    def button_cancel(self):