Problem With Invoice Generation using code

Question

I have some sales orders -  I put an button on the below of the sales order so that it will create the invoice through code. I CANT USE COPYTO option of sales order since i am adjusting some values while pressing the button.
What i have done....
1. Using get by key i read values from sales order.
2. Using objects of sales order and invoice i am binding values.
-- On Header
> Card code
> Card Name
> Date
  OnLine
> Item Code
> Whs Code
> Quantity
> UnitPrice ( Calculated using the values in the sales order)
> Tax Code
Problem i have...
1. The amount till  Total LC is correct.  BUT NOT THE TAX AMOUNT.
2. When i checked the  Tax Base amount -> Its different form the TOTAL LC column.
3. Then i noticed that - in header i saw  some discount amount , but the discount % is null.
4. I have not given any discount on BP or any special price for BP.
5. I tried to put 1% discount on header but still the discount amount is more than 1%.
Please someone help me soon.
UPDATE TO MY ABOVE QUESTION....
I found that error was causing by the option i have activated - the Round off to one in  financial set up...is there any other method for the round off with out using the setup...
Edited by: vibinvarghese on May 23, 2011 1:09 PM

Answer 1

Some one find me an solution...this is causing me lot of problems now...