In FrameMaker 2019, you can choose Insert > List Of > References and get a list of external or unresolved cross-references. You may also want to take a look at my CrossrefReporter script at frameexpert dot com.
I have read article your script "CrossrefReporter" already it's excellent!!
The result of script, Is can copy info into report editable?
Able on FrameMaker 2015? Thanks.