In general we may faced this kind of issue in our business.
while loading from Source to PSA, after several hours loading, due to the couple of erroneuos data packets whole load was failed, at that time below step will will be useful to update only erroneous data packets by manul.
At PSA monitor screen.
it will pop two more proessing of data pakts in diglog or background.
default(yellow) is Packet should be processed in the dialog, but choose 2nd option to run in background.
by choosing, this process only process the erroneous(yellow) data packets rather than pulling whole data again.its simple step but useful.
http://scn.sap.com/docs/DOC-39751 – SAP BW Data packet processing issues – Second attempt of processing
Thank you all