Error in psa level - Request not updated to any data target using delta

Hi Experts,

This is kalyan and i am facing a issue form 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