Redarding exits in VT01n and VT02n

Question

Hi Experts,
1.After executing VT01n, after giving tranport pln point and shipment type,press enter
2.It will take you to the next screen where you can enter tranporting agent , truck number and all.
3.After entering data into this screen,if we click on save it saves.
4.If we click on Exit button in the menu bar(Yellow Button), its gives u pop-up asking that do u want to save changes with yes, no and  cancel buttons.
5,If we click save it saves the changes , and comes back to the first screen with message shipment created.
6.But I want , when we click on  yes, i have to give one information message and after clicking ok on that information message , i have to be in the same screen ,
can anybody please tell which exit is used for this.
I found one exit ZXV56U11  but in this if i write required code like
if sy-ucomm = 'YES'.
message 'some message' type 'I'.
leave to screen 1020.
endif.
it is going to the dump.
Please suggest me the correct exit.
Thanks in Advance
Regards
Ramakrishna L

Answer 1

Try to use EXIT statement after the leave screen statement for stopiing the further processing of the program.
Regards
Kumar