Not supported fields are left empty, as are supported fields for which no information can be retrieved.
Any text field may be escaped, but if the field contains one or more occurrences of <fieldseparator>, <rseparator>, or <doublequote>, it must be escaped. <doublequote> characters are doubled, and the resulting field text is surrounded by <doublequote> characters.
String constants are not case sensitive.
Media
The media usage in a job is logged, not the tray contents. <mid> does not have any relation with physical trays.
The number of media that can be logged is limited to 16. When the number of media in a job exceeds 16, these media are (in the account logging) treated as if media number 16 was used.
Reserved account IDs / users
The account-ID for service jobs is always 99997.
IDs 99998 and 99999 are reserved for future use.
Username "Key Operator/System Administrator" is reserved for clean jobs and for jobs containing Key Operator or System Administrator settings.
The reserved account IDs and users are not enforced/filtered by the print server.