DEFINITION: Data ABB is a Data Object containing symbols obtained through an encoding process of business information or a legal act. Source: ISO-IEC-2382-1 * 1993 * (https://www.iso.org/obp/ui/#iso:std:iso-iec:2382:ed-1:v1:en) INTEROPERABILITY SALIENCY: IoP Dimension: Structural IoP The Data ABB is salient for semantic interoperability because it represents the most important mean of interaction between ICT systems of organisations in order to ensure interoperability as stated in the EIF recommendation n° 30: "Perceive data and information as a public asset that should be appropriately generated, collected, managed, shared, protected and preserved." EXAMPLES: The following implementation is an example on how this specific Architecture Building Block (ABB) can be instantiated as a Solution Building Block (SBB): Aggregated data of the Emission Trading System (ETS): EU ETS data is aggregated by country, by main activity type and by year on the verified emissions, allowances and surrendered units of the more than 12 000 stationary installations reporting under the EU emission trading system, as well as 1400 aircraft operators. Aggregated data can be viewed with the EU ETS data viewer, which provides an easy access to emission trading data contained in the European Union Transaction Log (EUTL). Source: (https://www.eea.europa.eu/data-and-maps/dashboards/emissions-trading-viewer-1)