Exchange Overshoot


I have an issue, which is the exchange rate on one of the transaction in GL has a lot of different with “Setup>Exchange Rates”. Rate in the transaction is " 389990823745.0000 " and in setup is " 49.8100 ". Is it the user has entered the exchange before post? or some setting has been changed? please advise me.

May be user has changed the rate before posting…

Exactly which field are you referring to in GL Entry ?