I have encountered a situation where I can Logon fine using SAPLogon,but unable to do using BEx Analyzer(through START)!!The system throws an "RFC Error communication" !!But can access through RRMX from BW.Did search the threads,and they advised to look on Authorizations,Ports..
1).Checked with System Admin -All the ports are open
2).Authorization - Fine,because with the same user i can logon through RRMX...
It would be great if somebody could throw light on this...Quite urgent..