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It is well-known that high competitiveness and the changing market environment require organizations to quickly adapt to changes while reducing costs and ensuring the quality of their products and services. Being competitive in this environment involves revising traditional management methods, which is why we increasingly hear about 'Lean', not only in industrial sector companies but also in the service sector. Companies implementing this methodology seek to gain in terms of competitiveness, as 'Lean' is ultimately a method that helps the company focus on achieving the strategic objectives of the business.

It is a commission from the Polytechnic University of Catalonia to study how to improve the generation of renewable energies

Complete this guide on Veri*factu and invoicing regulations with Part 1, where we answer questions about obligations, compatible programmes and managing errors or duplicates.

According to VAT regulations, a corrective invoice must be issued in cases where the original invoice does not meet some of the requirements established as mandatory in the regulation governing invoicing obligations. It is also mandatory in cases where the charged VAT rates have been incorrectly determined or when circumstances occur that lead to the modification of the taxable base (return of containers or packaging, discounts, cancellation of operations, alteration in prices or provisional prices, non-payments).

We are pleased to announce that Grup Carles' engineering and sustainability consulting division has recently obtained ISO 9001:2015 and ISO 140001:2025 certifications from SGS International Certification Services Ibérica, recognising our firm commitment to quality and environmental management.

Effective debt collection management is crucial for all companies, especially under exceptional circumstances like the present, where cash flow becomes central to the survival of the business

During the webinar on 4 November, some questions remained unanswered, particularly in relation to Veri*factu, Computerised Invoicing Systems (SIF) and the various invoicing programmes available on the market.

That is why we have prepared this Part 1, where you will find clear, practical and up-to-date answers on the main obligations, compatible programmes, simplified invoicing, the use of AEAT software and the management of errors or duplicates.