I am so new to this that I didn't even realize 'invalid logical name' was referring to the character length.  My only exposure to programming has been to write CL programs on the i Series and errors containing the word 'logical' mean something totally different - my presumption (obviously incorrecty) was that the error was based on the path through which the SAS program was accessing the file.  This makes a lot of sense, thanks everyone.   Adam ... View more

Here is the log containing the error:  1 OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK; 72 73 filename testalias "/folders/myfolders/sasuser.v94/mydata.csv"; ERROR: Invalid logical name. ERROR: Error in the FILENAME statement. 74 75 data Demographics; 76 77 infile testalias dsd; 78 79 input Gender $ Age Height Weight; 80 81 run; ERROR: Physical file does not exist, /opt/sasinside/SASConfig/Lev1/SASApp/TESTALIAS. NOTE: The SAS System stopped processing this step because of errors. WARNING: The data set WORK.DEMOGRAPHICS may be incomplete. When this step was stopped there were 0 observations and 4 variables. NOTE: DATA statement used (Total process time): real time 0.00 seconds cpu time 0.01 seconds   Here is the log from the program that runs fine:   1 OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK; 72 73 data Demographics; 74 75 infile "/folders/myfolders/sasuser.v94/mydata.csv" dsd; 76 77 input Gender $ Age Height Weight; 78 79 run; NOTE: The infile "/folders/myfolders/sasuser.v94/mydata.csv" is: Filename=/folders/myfolders/sasuser.v94/mydata.csv, Owner Name=sasdemo,Group Name=sas, Access Permission=-rw-rw-r--, Last Modified=04May2018:21:29:28, File Size (bytes)=73 NOTE: 5 records were read from the infile "/folders/myfolders/sasuser.v94/mydata.csv". The minimum record length was 13. The maximum record length was 13. NOTE: The data set WORK.DEMOGRAPHICS has 5 observations and 4 variables. NOTE: DATA statement used (Total process time): real time 0.00 seconds cpu time 0.01 seconds 80 ... View more