ERROR IN PSA LEVEL

*Hi Experts,*

*This is kalyan and i am facing a issue in BI 7.20 VER from past 1 week am not able to solve.*

*this issue is process chain scheduled daily basis and process chain getting failed failed from 01-01-2011 to till date*

*but records available in psa level but not reached target then when i try to do schedule manullay but*

*in data target tab it is not showing target.i have tried with process manually this option available ipsa under header tab*

*when i choose that option it is showing this error SID 1334 is smaller than /equal to update SID of DTA ZSD_BLCO3/47287;Canceled please help me in this issue if one knows and what will be solution.*

*Thanks In Advance,*

*Kalyan*