A call to C$SYSTEM fails when the command contains special characters like ‘&’:
CALL "C$SYSTEM" USING "START C:\TEMP\MF&2019.XLSX" 225 GIVING RETURN-VAL
The following error is received. Only part of the command is recognized so the file cannot be found:
C:\TEMP\MF Windows cannot find 'C:\TEMP\MF'. Make sure you've typed the name correctly, then try again.
Full article: https://portal.microfocus.com/s/article/KM000007308