Activation of interrail pass (outbound trip)

Hey Community

I have a question regarding the outbound trip. My  country of residence is Denmark. But on my first day of traveling I will be in Germany. Therefore, I booked a train ticket (outbound) from Denmark and through Germany. Is it possible to take the train from a train station in Germany or do I have to activate the interrail pass on the train while being in Denmark?

So does the interrail pass require activation (use of train ticket) in the country of residence?