German Tax Number Requirement for Amazon FBA

Hello,

I have created a new Amazon seller account and I reside in Austria. I have a non-branded product that I want to sell, and it is in the fashion category.

My question is as follows:

I want to send my products to the German warehouse through FBA. I have an Austrian tax number. Do I need to apply for a German tax number? I don’t expect sales to exceed 5000€ in the first year. I read that there is a threshold of 10,000€, but I am not entirely sure if this threshold is only related to whether or not I need to pay tax, or if I still need to apply for a tax number. If someone can clarify this for me, I would really appreciate it.

Thank you.

Best regards.