Acceptability refers to meeting the policymakers, end-users, and health system requirements for a new TB vaccine for adults and adolescents. This  includes defining values from various populations, engaging communities as partners in decision-making, and having robust communication strategies in place. This follows from the WHO global framework for country introduction of new adolescent and adult TB vaccines (https://www.who.int/publications/m/item/who-global-framework-to-prepare-for-country-introduction-of-new-tb-vaccines-for-adults-and-adolescents)