We have three types of GV's, named Gift Cards, Gift Promotional Vouchers, Gift Vouchers.
The basic difference of these are as follows:
Gift Cards - Available in stores for Sale
Gift Promotional Vouchers - These vouchers are given to the customers under certain promotions. like on the purchase of Rs. 6999 customer will get Rs.1000 Promotional Gift Voucher
Gift Voucher - These voucher usually distributed as barter exchange.
Hence we want to block the loyalty points on redeemption of the Gift Promotional Vouchers & Gift Vouchers.