[l33t]

When using the missing Item/partial method, It's a commonality for companies to open an Investigation with the carrier and cross-check the weight of the consignment.

In terms of the legal document, Is It a statutory declaration or an affidavit? If It's the latter, It's admissible In court, so do not sign It.

I'm not sure what it is, it's asking me to fill out my name and adress and the missing item.
it only says something along the lines of "lawful declaration" (loosely translated)

It's difficult to tell with the lack of Information at hand.

See If you can omit Identifiable details, and post a snippet of the document. Myself and other members, can then make an Informed decision as to the best course of action.

Spoiler:

the big title says "lawful declaration - order not or partially delivered"