A packing list accompanies the international shipment and is used to inform transportation companies about what they are moving as well as to allow the customer and others involved in the transaction to check what has been shipped against the proforma invoice. It is a good safeguard against shipping incorrect cargo!
To prepare your packing list, delete all the prices on the invoice and double-check to see that the number of cases, weight (net, gross, metric) and measurements appear on the invoice. Then rename the document "PACKING LIST" in big, bold letters and you're all set. Never substitute a packing list for a commercial invoice.
Your freight forwarder, customs broker, bank and customer should indicate how many copies they will need, and where each copy will need to be attached and distributed, some weeks in advance. I always make 3-4 extra copies for my file just in case.
If you take care of your shipment documentation online, select the packing list option to download and, check with all parties involved in the international sale to determine if your packing list needs to be signed.