Demand-responsive public transport, such as new mobility solutions (NMS) like car sharing, city bikes, call taxis or e-scooters, have become increasingly popular in big cities. NMS have started to influence how people move around in urban areas, and they are also expected to impact public transport operators and their IT landscape. The paper aims to contribute to an understanding of this impact and uses enterprise architecture models as a basis for visualising and analysing relevant business and IT aspects. More precisely, the focus of the research presented herein lies on developing a reference enterprise architecture for integrating demand-responsive public transport into traditional supply-oriented public transport operators. More precisely, the aim of this paper is to evaluate the initial version of a reference enterprise architecture for demand-responsive public transport. The evaluation is based on expert interviews and focusses on the area of planning and resource utilisation.