Hi,
Your creating customer operation (Z/Y) then you have to save this in cutomer package(Z***) which you can select from the package dropdown. If there is no any customer package then you have to create a customer package and then save your request in that customer package
.Create customer package:
Go to SE80 and select "package" and create one customer pakage Z*** and use this package when your saving your customer operation.
Note: Ask your ABAP'rs. they will help you.
Regards,
Dinesh