Unable to reverse goods movement throuh VL09

Hi experts:

I am trying to goods reverse material in VL09 for outbound delivery (returms delivery note). When I open VL09 and than I clik on reverse button system works a long time and in the end shows me time out.

Throuh my test : when these line items of the DN more than 150, the problem will happened.

Thanks a lot.

Peter Lee.