I met a problem when my magento shop sent payment to its gateway. There are too many numbers after dot. for example: $ 271.22432488. But I only reserve 2 numbers in my check out prices. so the payment gateway inform me the ammount doesn't match.
Does anybody can help me to fix it?
I use a customer calculation extension in my webshop. this enable customer use some parameters (such as width, length, extra products add-ons, etc.) to calculate the end price by themselves. however,there are some bugs to be fixed:
1.the display calculation price in may webshop does not match the price which is sent to payment gateway. For example, display final price from calculation is $27.34, but the price that is sent to payment gateway is 27.342780708. this lead payment failure because the above two amount are not matched.
2. The gift coupon that created in shopping cart doesn't apply to the price which is calculated by customer (the calculation extension). But the normal list prices are not problem with the coupon.
3. this calculation formula are valid for the whole shop, I also need the formula per each different product category.