SAP Message BK006 - Cost element & is not created for &

Diagnosis
Cost element &V1& does not exist for posting date &V2&. Either the costelement does not exist, or it was created with another date.

System Response
Processing is terminated.

Procedure
Create cost element &V1& with a period of validity which covers theposting date
Alternatively, enter another cost element that exists for posting dateV2
Alternatively, correct your entry