Accounting Currency of Expense Receipt required exchange rate in PR05

Hi All,

In PRRW  travel expense posting, only company code currency is getting posted. For an international trip,

i want both the document currency and accounting currency to get posted.

i had done following setting in global

1)   Trip currency = In currency is determined from company code

2)   Settlement of foreign currency receipts  =  Choose foreign currency per receipt

But still document is posting only in trip currency

Senario 1:  in PR05

in the above screen Currency field i had taken as 100 USD @ Rs. 58 and Account currency is INR so in finance  Document Amount is showing me 5800/- with amount in Document Currency  which is wrong

senario 2 : in Pr05

in the above screen Currency field i had taken as 100 USD now when i change the accounting Currency to USD then

Exchage rate changed to Rs. 1/- but when i post to finance it showing me both Document currency and amount in local currency which is right

but problem is that system by default it is taking exchange rate @ 56/-  from OB08 Tcode we want user input field in PR05 screen for exchange rate

Can Any help on this thanks in advance

Thanks

Trinath