Adjust excahnge rate

How we adjust exchange rate … I know in periodic Activities but How we adjust for LCY … As we choose this batch and I put blank for currency code option… It adjusted all the currencies unless LCY .

Too good, never heared this one!

Thank you John , I know after that it can’t be implemented on Navision … We have this in Lebanese system to adjust the exchane rate on LCY as on ACY … But I am in a way to find solution in coding Jouhyana