EdvalClassCode field
The LISS Standard says:
The class code must be in the format of <courseCode> and <class identifier> separated by a space, e.g 9MAT 1, even if both SIS and satellite systems use a different form of class codes.
Maximum 20 chars.
"ClassCode" : "9MAT 3",
"EdvalClassCode" : "9MAT3",
Please also note that punctuation marks also seem to be used as the separator instead of the space eg:
"ClassCode" : "12PDH DE",
"EdvalClassCode" : "12PDH.DE",
But in the case where they have used two punctuation symbols only the rightmost is used as the separator eg:
"ClassCode" : "12/11Study. TueB4",
"EdvalClassCode" : "12/11Study.!TueB4",
We also see codes like this:
"ClassCode" : "9Assembl y",
"EdvalClassCode" : "9Assembly",
For further information please see the picture below: