How to handle negative value in Proc X11

[Aman4SAS]

Hi ,

I am trying to use proc X11 to forecast my sales. 

But i am facing a problem that there is a negative value in my time series(due to return on that particular month).

please suggest me if there is any solution in proc x11 to handle this situation or do i need to handle it other way arround?

Thanks in advance

[udo_sas]

Duplicate of: https://communities.sas.com/t5/SAS-Statistical-Procedures/How-to-handle-negative-value-in-Proc-X11/m...