First collect any shopping cashback coupon of your choice in 'rewards' section of APay. (Collect coupon of bigger amount if your shopping voucher balance is bigger to avoid doing multiple times)
Then place order from the collected coupon's product list with minimum amount mentioned and choose shopping voucher balance at checkout. (Pay remaining amount with any other payment mode if shopping voucher balance isn't sufficient)
After receiving cashback as APay balance, cancel the order. You'll get refund of the difference amount other than cashback received in original payment source.
Repeat the process for remaining amount of ASV (if any).
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