getting an ads error

hi,

i am facing a problem..while triggering my adobe form from me23n i am getting an ads error -request start on 31/08/07..

i have debugged my whole code written in the initialization since i am using a standard drivger program...

the most strange part of the problem is that i am not getting this error for all purchase order documents....for some documents only i am getting thsi error..

after debugging i have found that it is a system error..

i dont know what has gone wrong..plis help me out from this...any guesses as why this error is occuring...

plis help..i am stuck at this point..