gross Weight is different

A goods has been despatched to Brazil yesterday. But the fowarder told me that the gross weight on the packing list is not same as the actual weight of goods.
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x I have contact with the forwarder they told me their tolerance is 3% of the difference.So I have no other choice but to change the docs.:L s8j2Q#Ix5L NS
Next time, if any one making pakcing list should pay attention to this differnce in order to avoid the inconvenience.

my company export stone,often the grossweight in B/L is diffirent from packing list.but no one told me.+cyM-VC ]O*` gL
exporting to USA and some developed countries,it has a rule to limit weight,but our client often let us loading more
+z1gF)i7UL`"y products into the container.z1x%@|R ]#LT'g)\
even some clients tell us to making less amount in the invoice so they can reduce the tax.