/GROUP=n

    You must specify /GROUP if the memory-resident global section
    is a group global section. Do not specify /GROUP if the memory-
    resident global section is a system global section. The value n
    is the UIC group number (in octal) associated with the memory-
    resident being freed.

    You cannot use the /GROUP qualifier with either /SYSGBL or
    /NOGLOBAL_SECTION qualifiers.