SAP Message UCFC002 - Customizing error: Invalid combination of posting levels

Diagnosis
The task for the preparation for consolidation group changes intends topost to posting levels that are greater than 20 and posting levels thatare less than 20. This is not possible.

System Response
Task execution will be terminated.

Procedure
Divide the posting levels among two or more different tasks. Each taskmay contain only posting levels that are either less than 20 (that is,02 or 12) or posting levels that are greater than 20 (that is, 22).