New rules go into effect today, 3/1/23!
https://www.usps.com/international/new-eu-customs-rules.htm
Every item in your package must be listed on the customs declaration form.
For each item's description: You can't just name a general category; your description must be specific. For example, you can't just say "electronics"; you have to be specific about the type of electronics, like "computer," "mobile phone," or "television."
https://www.usps.com/international/new-eu-customs-rules.htm