83f17e5c___International_Bulk_Mail_T_Cs__Actions
[No] 6.6.11 [Issue] During processing, other mail categories or mail from other mailing schemes is found and differs from the mail category that has been declared and paid for as stated in the posting docket at the BMC. For example, mail is paid at sea rate but subsequently was found to contain airmail. [Actions] 
SingPost shall return the mail to the PPI Permit Holder with a surcharge of Singapore Dollar One and Cents Two (S$1.02 - inclusive of GST) per piece or a minimum of Singapore Dollars Twenty One Singapore and Cents Forty (S$21.40–inclusive of GST), whichever is greater. If the mail is to be re-posted, the correct postage for the relevant category or scheme will also have to be paid.
SingPost - International Bulk Mail T&Cs
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