When uploading the NRUF FCC Form 502 in NAS, the file naming convention must be OCN.MMDDYYYY.NRUFGEO.xlsm or OCN.MMDDYYYY.NRUFGEO.xlsx for the Geographic (CO Code and Thousands-Block Resources) NRUF FCC Form 502 and OCN.MMDDYYYY.NRUFNONGEO.xlsm or OCN.MMDDYYYY.NRUFNONGEO.xlsx for the Non-Geographic (5XX/9YY Resources) NRUF FCC Form 502. 

NOTE: The file extension .xlsm or .xlsx does not need to be typed.  The extension is added when saved and should not be included more than once, e.g., OCN.MMDDYYY.NRUFGEO.xlsm.xlsm.