If thats the case, then you would have setup an import process for the zip file would you not? I.e. your data transfer documentation would detail where you will save the ZIP file, how you will ensure the files are all extracted correctly, possibly it will also tell you how you will protect those files - i.e. so if you need to go back to them you can always do this. Hence that data import (and validation) process would take care of getting the files ready, so nothing SAS related, in SAS you would just read in the data.
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