RB133787279CN, my item has being showing Null and what does it mean?

item No. Year Status Location Destination Country Date
RB133787279CN 2013 Departure from outward office of exchange 10010200 NG 20130501 0915

2013-05-03 03:59:00 Nigeria: Embarkation
2013-05-02 01:37:00 Nigeria: Embarkation
2013-05-02 00:00:00 Nigeria: has received
2013-05-01 09:15:00 Beijing International Nigeria: total export package straight seal sealing of
2013-04-27 17:09:00 Wuhan International Nigeria: export total package seal each sealing of
2013-04-27 15:30:00 Wuhan International Nigeria: export total package seal each opening
The Zhuankou cell Nigeria: acceptance offices acceptance in 2013-04-27 09:03:00