**When I print list which type is ALV ,I can choose any one OUTPUT Device and printer.**
**But I print PO which type is SCRIPT by trail printout, I can not to choose printer ,it will be printed on my default windows printer.**
**It dosenu2018t means that the default setting of user is incorrect. I find that PO print has dedicated out type ,it includes form,page,process routines, etc.(transcation code :NACU)**
**I am not sure which parameter control the immediate print,how can i control PO print not immediately and I can choose own output device and printer ?**