SAP Message BK154 - Maintain the exchange rate type for version & in &.

Diagnosis
You want to use version &V1& in controlling area &V3&, fiscal yearV2.
You did not determine an exchange rate type for fiscal year &V2& inthis version. Since you post to a profitability segment using acurrency other than the controlling area currency, you cannot preventcurrency conversions and may indeed want them. Therefore, you must setan exchange rate type for version &V1& in &V2&.

System Response
The R/3 System rejects the entry.

Procedure
Maintain version &V1& with the function Changeversion, or correct your entries.