What is CN24 form?

Although we heard the form CN24 is used worldwide, it actually depends on the destination country. (Quoted from Universal Postal Union http://www.upu.int/en.html)

Here are the name of the official documentation provided in each country.

United States (USPS): Damage Report of Insured Article and Contents (PS 2856)
Italy (Posteitaliane): Lettera di reclamo

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