EFF not available to add to Comp Default and Override Fast Formula

Summary

EFF not available to add to Comp Default and Override Fast Formula

Content

I created an assignment extensible flexfield (PER_ASSIGNMENT_EIT_EFF) with several context segments.  I wanted to default a few of my columns on the workforce compensation worksheet to these EFF values using a fast formula.  The EFF is not available as a database item.  I did this at a prior company and below is my code.  However, when changing the code to what I called the values in this company I am getting errors and the fields are not appearing in database items.

I also get an error when compiling the fast formula -