Which window you are referring to? 

In general, codestring completion is internal connection between code part values of various code parts, which should appear together in the posting entry - so entering value in one code part will populate connected values in other code parts.

Hi,

This process is used to apply the completion of code strings for a particular site, when code strings for code parts have been modified.

It is recommended to run this process before the “Rerun Erroneous Postings”, in case you modify/add code strings here:

EX:

Best Regards,

Yoshini