Enter rate DEM / USD rate type M for 03.02.2025 in the system settings
Message No. SG105
Diagnosis
For the conversion of an amount into another currency, an entry is missing in the currency conversion table.
Procedure
Add the missing entry in the currency conversion table.
Execute function
You can then continue to process the commercial transaction
SOLUTION:
STEP : Go to T Code OB08 and maintain the Currency Exchange rate from DEM to USD as on 03.02.2025

Thanks,
Adharsh K S