On p. 36 of the MSCA Financial Guide it is written that the research, training and networking contribution covers costs related to the ... transfer of knowledge and networking activities (e.g. costs for participation in conferences, trips related to work on the action, training or language courses, seminars, lab material, books, library records, publication costs, visa-related fees, even if incurred before the recruitment date) as well as ... additional costs arising from secondments, non-academic placements and outgoing phase in Global Fellowships.