I have reviewed the above query and confirm that you need to have permissions to CUSIP, SEDOL GICS to access Instruments-CUSIP-SEDOL-GICS and REF-Data-CUSIP-SEDOL-GICS files.
As an alternative, you can refer to the following:
The difference between these couple of files is the “CUSIP-SEDOL-GICS” will provide CUSIP-SEDOL-GICS details others don’t. The rest of the data remain same.
I used this extraction for NAS.
It returns NAS-2017-09-05-Instruments-CUSIP-SEDOL-GICS-1-of-1.csv.gz and NAS-2017-09-05-REF-Data-CUSIP-SEDOL-GICS-1-of-1.csv.gz.