Dear Chinchuta san,
CC : Whome it may concerns,
Refer to your memo we (Accounting) understood that SRT had exported mold and passed the customs process with lower price?
So, In case required for issue Debit/Credit note you should provide ;
•Invoice number
•In-correct amount, correct amount and difference amount.
•The reason of difference amount.
Dear Sukkamon san ,
Thank you for your support .
Have you already sent 3 mold to SAT ?