Thanks Suman for the response.
Assume it is a consequence. what i don't understand is "that KF which we changed" is used in many different data models(DSO's and Infocubes) and all of those remaining DSO's/Infocubes do not have any issues with the data loads except one infocube(which is ofcourse our most important IC).
As informed earlier, we deleted all the data from all layers and reactivated all data models and reloaded except that SPO to infocube, all others become successful.
Also, I created another cube copying my original infocube and created transformation & DTP from SPO, to my surprise , that load to new cube went successful.
I cannot even say SPO is corrupted coz it is sending the data to other cubes fine.At this moment, I am not sure, what went wrong and why the data load from SPO to infocube not happening(full & delta).
Any more thoughts that might help solving the issue. FYI, below is the message:
No More Data Available
Extraction from Sem. Part. Object ZXXXX : 0 Data Records (Full Load)
Start of extraction
End of extraction
Regards,
Jeevan