Actually, I would use table buffering on the child and row buffering on the master. Are you using any comboboxes in your grid?

>Yes i am using Table buffering 5 "Optimistic Table Buffering "
>on my both tables i.e. Master Table and Child (Grid) Table.
>I have tried setting buffering mode to 3 on the child table but
>in vain.
>
>So at last i have been trying with setting buffering mode to 5
>but even then the error still persists.