Different exchange rate on each material issued for order

Question

Hi all,
I have strange situation like this. Controlling area currency is USD and object/company code currency is THB. When i do Good Issue for production order, system use different exchange rate for each material although all of these material are posted on the same posting date for good issue.
Example :
I do Good issue material A and material B for production order 100000 at posting date 01.03.2008. When i look into cost analysis and look for USD currency, i found that exchange rate for material A is 30 THB/USD and exchange rate for material B is 25 THB/USD. FYI i use exchange rate type m. How can this happen?? How can each material have different exchange rate although its transaction at the same posting date??
I'm waiting your advice.. Maximum point will be given.
Best regard,
Yudha

Answer 1

I think its a bit misleading...The requirement is to post an Invoice with a base taxable amount of  Exchange Rate A and a tax amount of Exchange Rate B. The Base Currency is JPY and the System Currency is SGD. So the Report S_ALR_87012357 should see the amount in SGD there. The Issue is caused by the different exchange rate on the tax amount submitted by the Vendor Invoice.
Example: Vendor Invoice Amount: 926,413.00 JPY, then we created PO to Invoice with Base Currency JPYalso amounted 926,413.00 JPY. However, in the Vendor Invoice Amount, the Tax Chargeable is 923.00 SGD (based on their exchange rate 65.66 JPY per SGD). But our Exchange Rate (System Rate) is 63.49 JPY per SGD. How can we reflect the Tax Amount as 65.66 JPY but still the correct SGD amount is based on the Vendor Original Invoice Exchange Rate 65.66 and not the System Exchange Rate, 63.49 in the same Invoice Creation (MIRO)?