Need to do service mapping with SO line level EFF with PR line DFF for B2B SO

As mentioned above we have done the mapping, however there is no error which is populating even more the data for the attribute is also not populating in the PR line. We have also taken the reference of the oracle docs where we have refer the mapping example 2. I am also attaching the document over here. Along with that I also sharing the configuration that we have done.

The expression that we have used under attribute mapping is

def rlines = Revenue_Management_Information_Line; def optext = ''; rlines.reset(); while(rlines.hasNext()) {def rline = rlines.next(); optext+=rline.rmcsText; }; return optext;