**Will there be a rule that restricts the possible combinations of [BT-811(a)](https://op.europa.eu/en/web/eu-vocabularies/concept-scheme/-/resource?uri=http://publications.europa.eu/resource/authority/energy-efficiency-basis)**, that indicates the basis for caluclating the energy efficiency, **and [BT-811(b)](https://op.europa.eu/en/web/eu-vocabularies/concept-scheme/-/resource?uri=http://publications.europa.eu/resource/authority/energy-efficiency-item)** with a code for product, work or service covered by The Ecodesign Directive, Regulation 2020/740, European Union green public procurement criteria or Buildings covered by the obligation in Article 7 EED **?**