When withdrawing money from a Japan Post ATM using a card (which can act as either a credit card and or an ATM card) from Westpac, the withdrawal is from my credit card account, and I get charged a "cash advance fee"
131313 CASH ADVANCE 1000.00
xxxxxx/JAPANPOST BANK( TOKYO JP
xxx,xxx JPY
xxxxxxxxxxxxxxxxxxxxxxx
131313 FOREIGN TRANSACTION FEE 30.00
131313 CASH ADVANCE FEE - ATM 20.00
What's meant by "Cash advance fee - ATM"? Is it a fee charged by the ATM I'm withdrawing from? How can I minimize it?