Register of Information (DORA)

I kindly request that you answer the following question as quickly as possible: Our client is a financial company that is the only financial company belonging to another group of companies. However, the group of companies is not a group of financial companies, but rather a group of non-financial companies. Individual non-financial companies within this group, in turn, provide ICT services to the sole financial company. Therefore, there is no hierarchy of financial companies. How should this sole financial company be reported in B_01.02.0050 of the Information Register? Kind regards Christian König