1. Determine the packing method of the goods: If the goods have pallets and cartons at the same time, it is necessary to determine the specific quantity and size of pallets and cartons.

2. Contact the freight forwarder or shipping company: It is necessary to contact the freight forwarder or shipping company and provide them with detailed information on the packaging of goods, including the quantity, size and weight of pallets and cartons.

3. Modify the bill of lading: the freight forwarder or shipping company will modify the description and quantity of the goods on the bill of lading according to the information provided. The bill of lading should only show the total number of pieces. For example, the goods are 1 pallet and 2 cartons, and the bill of lading can show 3kg.

4. Confirm the modification result: After the modification is completed, it is necessary to carefully check whether the description and quantity of the goods on the bill of lading are correct to ensure that there are no mistakes and omissions.

5. Record keeping: All relevant records, including the quantity, size and cargo weight of pallets and cartons, should be kept for future inquiry or verification.