Diagnosis
The system was not able to determine the currency of the reservationcosts. There could be various reasons for this:

• The currency has possibly not been entered on the reservation object.


• If a price derivation for cost determination is used, then the
derivation has possibly been defined incorrectly.

System Response
Check the reservation object first. If the reservation object does notissue any warnings for the currency, you should check whether aderivation rule was defined.