Message SAP WS561 - You reconstruct the extraction structures in SAP BW (see long text)

Diagnosis You are reconstructing extraction structures for SAP BusinessInformation Warehouse. System Response Confirm the security dialog that appears. Procedure The extraction structures function without versions. It is thereforeimportant that you only reconstruct the extraction structures if theInfoCubes in SAP BW do not contain any data. If the InfoCubes docontain data, it will be posted more than once and the key figures willbecome too large. Check the contents of your InfoCubes.