Hi Bidwan,
UPL Data is collected and everyday basis and stored in BW and normal rention period in db for UPL is 14 days and in BW store would be 2 years after that also you can keep the data by archiving the UPL data. for lower release there is no point in using UPL.
UPL is very unique purpose for latest functionalites of CCLM and BPCA;
more over UPL is available from the release SAP BASIS 7.31 sp5 and 7.40 and basis 7.02 sp12
please check
Thanks
Jansi