This update adds crucial data for Belgian payroll calculations by incorporating National Insurance (NIS) codes for both countries and cities. This ensures accurate reporting and compliance with Belgian regulations, improving the payroll system's functionality within the Enterprise module.

Add Nis code field to res.city model and add belgian cities data Add Nis code field to res.country model and complete countries nis code data

Add countries and belgian cities view in the menu of payroll app.

Documentation can be found here:
- Countries: https://www.socialsecurity.be/portail/glossaires/dmfa.nsf/153f48bffb0bd3cac125686200574ff3/e3a58e3ddd17115ac1258b34002c5a61/$FILE/AN2023-1-FR5.pdf
- Cities: https://statbel.fgov.be/sites/default/files/Over_Statbel_FR/Nomenclaturen/REFNIS_2025.csv

Task-5979510

This update introduces core functionality for calculating Belgian payroll under the CP302 scheme. It includes features like seniority tracking, various work entry types with associated premiums, and specific wage reductions for students and work clothes allowances, aligning with Belgian regulations.

This update introduces the ability to generate an XML file for Slovak VAT reports, aligning with the specific requirements of the Slovak government. This ensures accurate and compliant reporting for our Slovakian clients, streamlining their VAT submission process. The change improves reporting capabilities and reduces potential errors.

Add XML export for the Slovak VAT report, following the
official government format

Related: https://github.com/odoo/odoo/pull/257528

task-6040973

Forward-Port-Of: odoo/enterprise#112963

This update allows businesses to track asset depreciation using different accounting ledgers, providing greater flexibility and accuracy in financial reporting. Previously, assets were limited to a single ledger, which is now expanded to accommodate diverse accounting needs and reporting requirements. This enhancement improves compliance and reporting capabilities.

This commit adds the ability to depreciate assets with multiple depreciation models on different ledgers.

task-5961309

This update enables e-invoicing for online orders in Guatemala, ensuring compliance with local regulations. It automatically includes company issuer phrases on invoices and allows customers to select their Guatemalan identification type (NIT, CUI) at checkout. The system now generates personalized DTEs when a NIT/CUI is provided and issues standard invoices for Consumer Final purchases.

**PURPOSE**
- Ensure invoices generated from website orders include issuer phrases and Support Guatemalan identification requirements for e-commerce.

**SPECIFICATION**
- Reuse backend phrase logic so website-generated invoices include company issuer phrases.
- Add ID type selection (NIT, CUI, etc.) in the checkout.
- If NIT/CUI is provided, issue a personalized DTE.
- If empty or 'CF', issue the invoice to the Consumidor Final.

task-4393611