SAP Message AO342 - With change of cost center &3, business area changed from &1 to &2

Diagnosis
You entered cost center &V3&. The business area and the profit centerare adopted from the definition of the cost center.
Business area &V1&, which was the business area until now, isoverwritten by business area &V2&.

System Response
The system overwrites existing business area &V1&.

Procedure
Check the cost center entry.