Dear Sirisak san
Thank you for your reply.
This difference is related to shpr's name ?
Because the shpr whose invoice# starts from SY is "Mitsubishi Heavy Industries,Ltd."(MHI)
and the one whose invoice# statrs from IZ is "Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. "(MHIET).
Mitsubihishi Heavy Industries Engine & Turbocharger (MHIET) was divided from MHI recently.
When cnee declares with BOI, they need to register shpr's name into Customs system in advance ?
Since the registeration is not done yet, cnee can't declare with BOI yet ?