We introduce you to the key concepts of waste management technology and regulations.



API stands for "application programming interface", i.e. a system that allows communication between two or more applications.
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Teixo Logistics App

It is a Teixo mobile application that facilitates interaction between office staff and drivers to achieve fast, safe and zero-paper waste transfers. Specifically, it allows the driver to send, from his cell phone to Teixo, the data recorded during the collection or delivery of waste. In addition, if your containers have a QR generated with Teixo, the driver can identify them by reading this code. If the driver also has a portable printer, he can also print the DI and delivery notes directly.

LER Code (European Waste List)

The LoW is a waste classification in the EU for administrative purposes. The different types of waste on the list are classified by six-digit codes. Chapters (four digits) and subchapters (two digits) define the types of activities that generate the waste.

If we take for example the code "04 02 22", we will see that "04" corresponds to the chapter "Wastes from the leather, fur and textile industries", "02" identifies the subchapter "wastes from the textile industry", "22" is the code corresponding to wastes from processed textile fibers.

Teixo digital signature

It is an electronic signature integrated in Teixo that has legal validity. It works according to eIDAS, European regulation 910/2014 which establishes the legal and security standards for the correct electronic identification of the signature. In practice, this type of signature allows Teixo users to further streamline the daily management of their environmental and commercial documentation. In addition, it is a secure signature system because, once signed, documents are unalterable and are stored and archived under strict protocols.

Registration as a waste producer

This is a communication for the exercise of the activity, addressed to the competent environmental body of the Spanish Autonomous Community in which the center is located, through an established procedure. In this communication, the producer must indicate the waste to be generated as a result of its activity, the approximate annual quantities and the waste managers to which it will be sent.

This procedure is mandatory for producers of hazardous waste and also for those who generate more than 1,000 tons of non-hazardous waste.

E3L language

E3L stands for Environmental Electronic Exchange Language.

This is the computer language used for the exchange of data between the different electronic platforms involved in waste management in Spain.

With the entry into force of RD 553/2020 on Waste Shipment, it is mandatory to use the most recent versions of E3L. The most modern is 3.4.

Environmental Identification Number (NIMA)

The environmental identification number (NIMA) is a code used at the state level, assigned by the Autonomous Community to identify facilities registered as waste producers and/or managers in accordance with the Waste and Contaminated Soil Law (Law 07/2022).

In the same way that a NIF is associated with a company, the NIMA is associated with a center. A site is defined as one or more facilities subject to different authorizations or registrations, located on the same site and whose owner is the same natural or legal person.

The NIMA is made up of ten digits: the first two correspond to the INE code of the province and the remaining eight are numbers assigned by the Autonomous Community. This number is assigned according to three factors:

- Holder of the authorization of the facility or center. Identified by its NIF.
- Location of the facility or center. Identified by its UTM coordinates.
- Main activity of the center. Identified by its CNAE.

Transfer operator

In accordance with the Royal Decree on Shipments (RD 553/2020), the operator of the shipment is the natural or legal person who organizes the shipment of the waste. As a general rule, the operator will be the producer of the waste. It may also be:

  • The manager of a collection depot, when grouping small quantities of the same type of waste in a single vehicle, for subsequent transfer to a treatment facility from its depot.
  • An agent or a waste dealer, previously authorized in writing by one of the above listed operators.

Extended Producer Responsibility (EPR)

It is a concept used within the European Union policy that is summarized in the "polluter pays" principle. It establishes that producers are obliged to take responsibility for the waste generated by these products once they have been used, whether they are packaging or not, both for domestic and industrial use.
Until now, in Spain it was only obligatory for electrical and electronic equipment, batteries and accumulators, vehicles, packaging, tires and mineral oils. However, the entry into force of the Law on Waste and Contaminated Soil (Law 7/2022) has strengthened the scope of this responsibility, increasing the list of obligations for the different producers.

Shared responsibility of the waste producer

For decades, the model of responsibility within waste management in Spanish legislation was the so-called "delegated responsibility", which establishes that the responsibility of the producer or holder of the waste ends when it is delivered to a dealer for treatment, or to an authorized treatment entity, with documentary proof. This model has proved to be insufficient, as it neither guarantees the correct management of the waste nor allows the traceability of the waste to be controlled. The European Union itself recommended that Spain replace this delegation system with a "shared responsibility" model, following in the footsteps of countries such as France, Germany and the United Kingdom.

The shared regime regulates that the waste producer shares the responsibility for the final destination of the waste, even if it is managed by intermediate agents. This measure favors a self-regulation effect among the actors in the waste chain, since the producers will seek the best existing treatments for their waste, and a correct management of the waste until its final recovery or disposal.
Law 07/2022 establishes shared responsibility, so that it is not enough to deliver the waste to a dealer or an intermediate manager, but the producer must ensure that his waste reaches a final treatment.


A Saas or Software as a Service is a computer program that allows its users to connect and use its solutions centrally and in the cloud, through a pay-per-use model.

Software in the cloud

The term "cloud software" refers to those computer programs that, like Teixo, are run from the Internet. Such applications are not hosted on a single computer, but on a network of servers.

Electronic processing of the transfer procedure

This involves the submission of electronic waste shipment documents to the competent bodies through the corresponding environmental platforms.


The .xml extension identifies the file format chosen by the Administration for the exchange of waste information. The files you upload to the environmental platforms use this format. There are several versions of xml format. 

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