This option - DBMS=ACCESSCS - requires use of the SAS PC Files Server. Do you have that installed and running either on your own PC or on a remote Windows server accessible by you?
In that case if you are using a remote Windows server then you will need to specify the server name and port plus possibly your user name and password. You can read the doc here.
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Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.
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