Error: There is no value entry within Filter

Hi All,

While i am trying to post a sales invoice. I am getting this Error as.

There is no value Entry within the filter:

Filters: Item Ledger Entry No.: 2981

I am using NAV 6.0 SP1

plz help in solving this…

Thank U…

If you can, Please activate the debugger and check at which point you are getting this error…