Use report program RKACUM21 to convert the revenues on cost centers

What causes this issue?

Revenues on cost centers are displayed as statistics as of Release
2.1D. To display revenue posted in previous releases correctly, this
data must be corrected.

System Response

It is not possible to plan revenues on cost centers before converting
the data.

How to fix this error?

Start program RKACUM21. SAP advises you to do so as a background job.
<DS:TRAN.SA38>Execute</>

Error message extract from SAP system. Copyright SAP SE.