[TYPO3-shop] voucher & credit point system howto?

[Timothy Ding]

hello list,

some questions about setting up the voucher system.

1) i enter the a random code into the "tt_products_vouchercode" table, then
use this same code into the voucher input box during checkout. press the
"korting berekenen" button but result says it's invalid (Uw ingevulde
vouchercode is fout. Probeer opnieuw). what else is missing?

2) can i make voucher input box appear and make calculation in the basket
page rather then the checkout/finalize page?

3) can the voucher discount make valid for only specific item or category or
is this discount global?

4) a product is listed at $399 and we want to give $100 and $200 discount
based on the voucher code. how do i make this possible with the creditpoint
system?

(we use tt_products 2.5.2, typo3 4.1.0)

many thanks
TimDing