When you use the EXCELCS or ACCESSCS drivers to access filenames that contain DBCS characters such as Japanese, Chinese, or Korean, the following error might occur:

proc import datafile="c:\temp\???_en.xlsx" out=out dbms=excelcs replace;
run;

ERROR: Unable to open file c:\temp\???_en.xlsx. It does not exist or it is already opened 
exclusively by another user, or you need permission to view its data. 

The problem occurs because SAS PC Files Server does not support DBCS characters in filenames.

To obtain a fix for this issue, contact SAS Technical Support.

Operating System and Release Information