One World India localization module, advance pricing , Adj. Cont. Code = 6 (Print on Invoice Detache

We are using JDE India localization module, To make the sales invoice we have used JDE Advance pricing functionality,

In the adjustment, Price Adjustment definition, we have used Adj. Cont. Code = 6 (Print on Invoice Detached). Now we have following requirement.

1. Item Price is 1309

2. We need to calculate Excise (12.5%) which is 163.62

3. We need to calculate 2% CST on Item Price + Excise which should come around 29.45.

4. But since we are using Adj. Cont. Code = 6 (Print on Invoice Detached), program calculate 2% CST on Item Price only 1309, so our 2% CST amount shows 26 on the invoice.

5. We need to have 2% CST 29.45 instead of 26.

Is there any way to achieve our requirement using Adj. Cont. Code = 6, CST should be calculated on Item Price + 12% Excise, presently CST 2 % is calculated on Item Price only due to Adj. Cont. Code = 6