• For NL shipment, finally we use reference by PO No (4500xxxxx) But it’s difficult to handle because TH customs have any inquired with SYN TH. We also take action to answer.
• For IN shipment they can add up PO 8600xxxxxx into others shipping docs by self. So, please more understanding.
It’s seems a lot of shipment export to TH in this case, It would be take usual action aligned with customs.
• For PO 4500xxxxx can use to reference. But it’s the best practice if use HUB invoice to reference was standard practice.