SM13 error

Hi Experts,

In our production system i see errors in SM13 everyday.

i can't reprocess these errors. I'm getting "Not all the update records could be started" message.

In Status column it's "V2 Processed" and it's green.

On the N column stop sign is there and the tool tip says "Restart not possible"

On the I column tool tip is "Synchronous Update"

Almost always Transaction code is VL02N with this problem.

How do i over come this problem???

thanks

Fazal