SAP Message /ISDFPS/SYNC011 - &1 is not the central system for &2

Diagnosis In the decentralizedsystem &SYST-MSGV2& , a connection needs to be established tothe central system &SYST-MSGV1& . However, system &SYST-MSGV1& is not defined as the central system forsystem &SYST-MSGV2& . Procedure Use transaction SM30 to maintaintable /ISDFPS/ALE_SYS. Both systems must be entered as logical systems.SystemSyst-msgv1 must also be enterd in the third column as the centralsystem for system &SYST-MSGV2&.