SAP Message VAL108 - Market exchange rate is being used instead of purchase exchange rate

Diagnosis
The valuation step requires the foreign exchange purchase rate for thevaluation key date. The system determines the foreign exchange purchaserate from the purchase values in position currency and valuationcurrency.
No foreign exchange purchase rate could be determined for this positionsince at least one of the purchase values is 0.
V3

System Response
Instead of the foreign exchange purchase rate, the system uses theforeign exchange market rate on the valuation key date.
V1
V2