yes but it dosnt say it has to be done this way.
"We expect firms to develop SCA solutions that work for all groups of consumers.
This means that you may need to provide several different methods of authentication for your customers. This includes methods that don’t rely on mobile phones, to cater for consumers who don’t have, or don’t want to use, a mobile phone. "
tamaris could ask to try a different way eg email or home landline number if the mobile no dont work.