Currently, when users group accrual reports by dates, aggregated computed fields are not calculated correctly. As a result, values such as the total amount may be displayed as zero even when the grouped records contain non-zero amounts.

## Steps to produce:
- Install Purchase and Accounting
- Create a product `Energy drink Sample` with cost 10$
- Create and Confirm a PO with the energy drink sample with vendor as `Administrator`
- Set `Received` as 1.
- Go to Accounting > Review > Bill to Receive
- Search Filter> Remove vendor grouping > Use Custom Group `Order Date`
- Expand the group

## Observed Behavior
Although the grouped lines contain an amount of 10 dollars, the aggregated total displayed in the sum remains zero.

The total should reflect the combined value of the grouped lines.

## Root Cause:
This issue occurs because opening the view triggers `_read_group_for_accrual`, which overrides the `_read_group` method on purchase order lines. The purpose of this override is to support grouping on computed fields that are not stored in the database such as `amount_to_invoice_at_date (Amount)`, `qty_received_at_date (Received)`.

When `_read_group_for_accrual` is executed, it delegates grouping for non-computed fields to the parent `_read_group` implementation, as shown at [1].

The parent method returns results in `res` similar to: 
```
[(datetime.datetime(2026, 6, 1, 0, 0), 1.0, 10.0, 1)]
```
During iteration over res at [2], the code uses `group[0]` as the grouping key. In this example, group[0] is `datetime.datetime(2026, 6, 1, 0, 0)`, which represents the granularity date
(e.g., the first day of the month when grouping by month).

However, `records_by_group` is keyed by the actual purchase order line order dates rather than the granularity dates returned by `_read_group`. For example:
```
{datetime.datetime(2026, 6, 12, 0, 0): purchase.order.line(1,)}
```

As a result, the lookup performed using the granularity date (`datetime.datetime(2026, 6, 1, 0, 0))` does not find a matching entry in `records_by_group`. Consequently, records falls back to an empty `purchase.order.line()` recordset.

Later, at [3], the aggregation logic computes totals using this empty recordset. Since the required fields are evaluated on an empty set of records, the aggregated values are computed as zero.

This ultimately causes the method to return a total value of zero
[1]-
https://github.com/odoo/enterprise/blob/eeea1377a7d36d11e140c44dee30a45228e7b4a6/account_accountant/models/analytic_mixin.py#L9-L24 
[2]-
https://github.com/odoo/enterprise/blob/eeea1377a7d36d11e140c44dee30a45228e7b4a6/account_accountant/models/analytic_mixin.py#L40-L42 
[3]-
https://github.com/odoo/enterprise/blob/eeea1377a7d36d11e140c44dee30a45228e7b4a6/account_accountant/models/analytic_mixin.py#L44-L47

## Solution:
The issue can be resolved by grouping records using the same date granularity specified in the groupby, rather than using the field values.

By aligning the grouping logic with the granularity returned by `_read_group` (for example, grouping by the first day of the month when using monthly grouping ), the keys in `records_by_group` match the values returned in `res`. As a result, the corresponding records are correctly retrieved during aggregation.

This ensures that the aggregation is performed on the appropriate purchase order lines instead of an empty recordset, allowing the computed totals to be calculated correctly.

[opw-6261225](https://www.odoo.com/odoo/project/49/tasks/6261225)

### Problem

`Mail: Fetchmail Service` cron aborts with `AttributeError: 'NoneType' object has no attribute 'upper'` in `l10n_cl_edi/models/fetchmail_server.py::_process_incoming_customer_claim` when an incoming customer claim DTE has no `<RUTRecep>`:

```python
dte.findtext('.//ns0:RUTRecep', ...).upper() or
dte.findtext('.//ns0:RutReceptor', ...).upper()
```

`findtext()` returns `None` when the tag is missing, so `.upper()` blows up before the `or` fallback can run. Once the cron hits such a message it re-crashes on every subsequent run and blocks the whole mailbox until the offending mail is deleted.

### Fix

Guard each `findtext(...)` with `or ''` so the `or` chain actually falls through. Empty `partner_vat` is already handled by the existing "Partner … has not been found" branch a few lines below.

### Traceback (Odoo 19)

```
File "/mnt/extra-addons/enterprise/l10n_cl_edi/models/fetchmail_server.py", line 285, in _process_incoming_customer_claim
    dte.findtext('.//ns0:RUTRecep', namespaces=XML_NAMESPACES).upper() or
AttributeError: 'NoneType' object has no attribute 'upper'
```

### Ticket

No ticket open for this but opw-5257481 is related.

From the cart, it is possible to increase the amount ordered of a rental product that synchronizes shifts depending on a specific service

Steps to reproduce:
1. Install website_sale_renting_planning module
2. Go to Rental > Products and create a new product "test" with Sales enabled, Product Type "Service", Plan Services enabled as "Developer", in the Sales tab, enable Is Published and in the Rental prices tab, create a pricing for Daily period
3. In the General Information tab, click on the internal link to "Developer"
4. Enable Sync Shifts and Rental Orders
5. Go to the eCommerce website and search for product "test"
6. Add as much product "test" to the cart as possible (the quantity is limited)
7. Open the cart
8. You can increase the amount of the product regardless of its availability

Issue:
We don't check the renting availabilities to limit the maximum quantity of the product

Solution:
Check that the new quantity of the product is available in `_verify_updated_quantity` for the specified dates. We also need to check the availability of the product when we modify the rental dates

opw-6274035

Issue
-----
International deliveries for fractions of items (eg 500g of a product sold by kg) are rejected by Sendcloud.

Steps to reproduce
-----
- Setup Sendcloud
	- Fedex international
- Create a product
	- weight: 1kg
	- valid hs code
- Create a contact (outside EU if the company is in EU)
- Deliver 0.5 of the product to the contact

> Error "... parcel not returned from Sendcloud"

Cause
-----
Sendcloud returns he folloing error:

> "The total weight for declared items exceeds the total weight set for the shipment."

This is because the `weight` set on the shipment

https://github.com/odoo/enterprise/blob/99a13453cac8a7a4677cef3df8896329c90c9e99/delivery_sendcloud/models/sendcloud_service.py#L449-L464

corresponds to the weight of the package, whereas the weight set on the description of the product in `parcel_items` corresponds to the weight of one "full" unit of the product.

https://github.com/odoo/enterprise/blob/99a13453cac8a7a4677cef3df8896329c90c9e99/delivery_sendcloud/models/sendcloud_service.py#L327-L335

We cannot change the quantity in `parcel_items` to match the actual delivered one because the field should be an integer.

https://sendcloud.dev/api/v2/parcels/create-a-parcel-or-parcels#body-one-of-0-parcel-parcel-items-items-quantity

The price is also off, because it gets taken from the `move_line`, so it reflects the price of the actual quantity and not a "full" item.

https://github.com/odoo/odoo/blob/208a8a6a5adb8ec1f2710453c2ee3b54c55a9f1e/addons/stock_delivery/models/delivery_carrier.py#L235

Note that this issue is common to **all UoM types**.

Solution
-----
Since we cannot change the quantity, we can instead adapt the description and weight sent in `parcel_items`. For example, sending 300g of sugar, we would send
- description: "Sugar (0.3 kg)"
- weight: "0.300"

-----
Ticket:
opw-6346330

### Issue before this commit:
When reverting a Guatemalan invoice (creating a credit note), the XML node FechaEmisionDocumentoOrigen incorrectly reports the EDI document's technical certification date instead of the original invoice's emission date. This causes the SAT to reject the document.

### Steps to reproduce the issue:
1. Download Accounting and l10n_gt
2. Revert an invoice (credit note) inserting a different date than the one of the invoice
3. See that FechaEmisionDocumentoOrigen report the date of the credit note instead of the one of the invoice

### Cause of the issue:
The _l10n_gt_edi_add_reference_values method extracted the date from original_document.datetime (the technical timestamp of when the XML was generated) rather than using the actual accounting date of the original invoice.

### Reason to introduce the fix:
SAT validation rules strictly require the reference date to match the exact commercial emission date of the original invoice. Fetching invoice_date directly ensures compliance, avoids timezone conversion errors, and prevents the XML from being rejected.
Source: https://www.lawinsider.com/es/contracts/dJXl4Vo79L2

<img width="730" height="205" alt="2026-07-17_10-19" src="https://github.com/user-attachments/assets/802e7bb3-fcf9-48db-b86f-227b494001b6" />

opw-6394409

Forward-Port-Of: odoo/enterprise#124794