求大神帮忙看看这段话，始终感觉理解不对

shipment advice must be sent within three days from the date of shipment to m/s. qatar general insurance and reinsurance co saq, p.o box -4500 doha, qatar, fax-44421961??by telex/cable/fax stating ahlibank q.s.c, lc numbers, amount, brief particulars of merchandise and shipping marks therein.a copy of shipment advice must accompany the documents