Regarding Time Stamping and Replication Error

Hi All,

Every time I am loading data I am receiving Time Stamp and replication error. Then I have to replicate the datasources and activate the Trans rules and can load data without any problem. However why am I receiving this error. It specifies that there is difference in datasource time stamps in BW and R/3 system. I am sure for maximum extent that there is no alteration in datasources in R/3 side. But again why I am receiving this error???

Please help me out.

Regards

YJ