Judgment of the Court (Tenth Chamber) of 7 December 2023.#Zamestnik-ministar na regionalnoto razvitie i blagoustroystvoto i rakovoditel na Upravlyavashtia organ na Operativna programa 'Regioni v rastezh' 2014-2020 and Zamestnik-ministar na regionalnoto razvitie i blаgoustroystvoto i rakovoditel na Natsionalnia organ po Programa INTERREG V-A Rumania-Bulgaria 2014-2020 v Obshtina Razgrad and Obshtina Balchik.#References for a preliminary ruling – Public procurement – European Structural and Investment Funds – Contract performance – Directive 2014/24/EU – Article 72 – Modification of contracts during their term – Modification of the time limit for performance – Substantial modification – Unforeseeable circumstances.#Joined Cases C-441/22 and C-443/22.