This transaction allows you to enter today's rate for several currencies at one, instead of using DBIXRT and doing them one by one. 

Displaying of all Exchange rate of currencies maintained in system in a single grid view , enables the user to add in the rates across currencies in one go.  

It comprises of the below fields

1.Date : Defaulted to today's system date, and cannot be altered.

2.Currency : Exchange rate maintained for this currency against the system currency 

3.Middle rate: Todays rate that you wish to enter  

4.Selling rate: will be defaulted for you based on the offsets in the DBICUR set up  

5.Mean Selling rate: will be defaulted for you  

6.Buying Rate: will be defaulted for you  

7.Mean Buying rate: will be defaulted for you 

8.Special rate: will be defaulted for you 

9.Purchase rate: will be defaulted for you  

Follow the below Gif to save Exchange rate in XRTINP screen.

See also : 
Exchange rate Upload into the system refer Exchange Rate Import - IMPXRT