Enhancements were made for the following:

a) Bug fixing for cart having multiple line items with some items having zero value (free)

b) Pass 'additional charges' information to alertpay payment gateway -enabling it to work with "minimum order value" module

c) Also pass "discount information" to alertpay payment gateway

This is a full package.

All modifications were done in a single file: "/catalog/includes/modules/payment/alertpay.php"

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