You have asked this same question many times already, and the fact that you are asking again implies that you have not read any of the suggested documentation on the topic of temporary vs permanent SAS libraries.
You have EXPLICITLY coded:
...which means that the file will only live in the WORK library during your SAS session and will go away when the SAS session is over.
You have a LIBNAME statement in your code:
libname dis "C:\Cwa";
this means that
...would cause the dataset to be written to the physical location: c:\Cwa\sales1.sas7bdat (which is how the dataset looks in Windows Explorer).
Understanding how a SAS LIBNAME statement works and understanding the difference between WORK and permanent SAS libraries and how to use LIBREFs is fundamental knowledge --
you will not be successful in your SAS programming endeavors without taking the time to really understand these concepts.