SAP Message 6B030 - Conversion into another currency required for display of converted amnts

Diagnosis
You have specified that amounts converted to a different currency areto be displayed in the list on the screen. However, you have forgottento specify how the conversion is to take place.

Procedure
Please choose the conversion to the old local currency at the exchangerate that was valid on the changeover date to the euro or choose anyother currency and a key date for the conversion.