Air Waybill usually have a field require for the signature of shipper to certify 'the particulars on the face hereto are correct and agrees to the conditions on reverse hereof'. I wonder is it necessary for the shipper to sign on this field. If shipper have not signed on this field, is it constitute...

LC issued calls for an inspection certificate without any additional requirement. Inspection certificate presented showing specification of goods as follows: Purity 'A' > 10% Purity 'B' > 20% whereas invoice showing as : Purity 'A' > 10% Purity 'C' > 5% which invoice showing as per LC stipulation. (...