Dear Rajesh,
Implement note 1691103 and restart the DTP. This should give a more detailed message where and why this error is occuring.
When the note is implemented, please restart the DTP to check if the data load is still failing. If it does, please set the parameter RSDD_ENABLE_MASS_CUBE_WRITE in RSADMIN to ' ' and then restart the dataload.
This is important, because if it works without the paramater set, then the problem is most likely in the cube writer when it is using the new mass update method.
If the issue persists after to follow the steps, please check/follow the steps provided in note 1405785:
1. possible error
Please look at note 1373402
It seems this connecting to invalid characters or SID Generation
This note points to 173241 which explains how to handle such unallowed entries with transaction RSKC.
To see what is the relevant characters:
Set DTP to "Update valid records (status red)", create an error DTP with transport request, then delete old request and reload the data - now check new request and wrong values in the error stack (PSA)
2. possible error
Cube reached max partition number. (check SM21 system logs, if see "CREATE/ALTER partition function failed as only a maximum of")
3. possible error
1657246 - Problems loading data in BW 7.3 SP4&5
Hope it helped. Best regards, Andras