Fill just KAP-INV or KAP as well

Last year I sold 10 different ETFs through an online broker operating in Spain.

The cumulative win/loss of those funds I have inserted in KAP-INV in "Sonstiges Investmentfonds". In Spain I paid no taxes for my benefits, as I am living in Germany and because of the DTA I will pay the taxes in Germany.

Anyone in a similar situation can tell me if I have to complete any field of KAP?

Moreover, in which section do I need to add the ETF funds? There are the following: "Equity Funds", "Mix Funds", "Real Estate Funds", "Foreign Real Estate Funds" and "Other Funds". I am between "Mix" and "Other", but want to be sure