Multiple Predecessors receiving #REF

AOW0415 ✭✭✭
edited 02/07/23 in Smartsheet Basics

I am working on a timeline- making it go backward instead of forward (begin from launch day in order to see when the project should be started). Attempting to do multiple processors where I am taking the beginning date of one line and the finish date of another line minus X amount of weeks. I am getting a #REF on the first processor only...the second indicating "-Xw" is fine. There are not any circular references that I can see. Additionally, the first processor keeps removing my "SF" and reverting to "FS". Anyone have any ideas? Thanks, Amanda