OE tax error

[xeaon]

I'm developping and order input form with the xapi...

Everithing seems to be alright except for execution time
but for now my concern is on the tax calculation...

I have some miscalculation with the xapi, so i try to created a order with accpac directly just to be sure the probleme is in my code...

but the fact is that when i create an OrderEntry with accpac the seconds item(parts) detail have a wrong basetaxe for the second taxe (tvq)(quebec canada, using tps and tvq taxe)

** the right way to calculate this

10$ * 0.07 = 0.7 (tps)
0.7+10 = 10.7
10.7 * 0.075 = 0.8025 (tvq)
10.7+0.8025 = 11.50
total : 11.50
tx total : 1.5025



*** IN ACCPAC
taxebase1 (tps) 10$ good
taxeamount1 0.70$ good
taxebase2 (tvq) 21.30$ bad (should be (10.70$))
taxeamount2 1.60$ bad




Ive done this 10 times and with different customer using the same tax class...

if i post the OrderEntry then ship all and print the invoice.. still the wrong tax amount.....

I'm preaty sure the customer and taxe class are ok because i double check them with a ACCPAC consultant...
And the first item(parts) have the right amount of taxe...

That is realy strange....
and if the accpac OE don't work properly i cannot validate myself on my xapi code...

if someone have an idea...

thanks in advance

my ACCPAC consultant would probably support me on this, but i seek the solution for myself too

 

[xeaon]

I found the solution,

In Common service -> tax Service --> Tax Group

Choose the tax group...
Set the Tax Calculation method to 'Calculatetax by detail'
instead of by summary...

for thoose who might have the same problem...