SAP Message RSQU023 - A consistent delta extraction is not possible

Diagnosis Consistent delta extraction is not possible since the system &v2& isnot connected to DataSource &v1&. This system is a BW system withrelease 1.2. Detla data can only be distributed to several targetsystems if all receiving systems have a BW release of 2.0 or higher. System Response The extraction process has been terminated. Procedure Delete the assignment of DataSource &v1& to BW system &v2& before yourepeat the extraction process.