Discount Coupon AND Group Discount Tax Problem

[mrkrinkle]

Thanks Dr. Byte,

Ok...

ORDER TOTALS

ot_coupon
This module is installed
true
Sort Order
280
Include Shipping
false
Include Tax
false
Re-calculate Tax
Standard
Tax Class
--none--

ot_group_pricing
This module is installed
true
Sort Order
290
Include Shipping
false
Include Tax
false
Re-calculate Tax
Standard
Tax Class
--none--

ot_shipping
This module is installed
true
Sort Order
200
Allow Free Shipping
false
Free Shipping For Orders Over
$50.00
Provide Free Shipping For Orders Made
national

ot_tax
This module is installed
true
Sort Order
300

ot_subtotal
This module is installed
true
Sort Order
100

ot_total
This module is installed
true
Sort Order
999


SHIPPING

flat
Enable Flat Shipping
True
Shipping Cost
6.5
Tax Class
--none--
Tax Basis
Shipping
Shipping Zone
--none--
Sort Order
10


PAYMENT

custom payment module
Enable WebAdvantage Module
True
Merchant ID
********
E-Mail Address
********
Payment Zone
--none--
Set Preparing Order Status
Pending [1]
Test Mode
False
Set Processed Order Status
Payment confirmed [WebAdvantage] [6]
Sort order of display.
10


DISCOUNT COUPON

Coupon Name :: PWC
Coupon Amount :: 10.0000%
Start Date :: 30/07/2006
End Date :: 31/12/2006
Uses per Coupon :: Unlimited
Uses per Customer :: Unlimited
Valid Product List :: NONE
Valid Categories List :: NONE
Date Created :: 30/07/2006
Date Modified :: 30/07/2006

I think that is all the relevant modules/settings...

[vinod_989]

I have a problem in tax calcluation. i have applied tax calss at each product. when i apply discount coupn then tax calculation is not correct at the puag and play payment getway .

so please suggect me the solutuion for this