Stuck with a package mapping problem

I have package mapped SYS.History but two classes in the package are giving me problems.

SYS.History.SysData and  SYS.History.PerfData has an Include ( Include (%sySite, MONEXT))

When I try to open the corresponding table in SQL I get the following error

ERROR #5540: SQLCODE: 400 Message: Process 213004 failed to compile Cached Query Class %sqlcq.BAM.cls26 with these errors: ERROR #5475: Error compiling routine: %sqlcq.BAM.cls26. Errors: ERROR: %sqlcq.BAM.cls26.1(10) : MPP5635 : No include file 'MONEXT' TEXT: #include MONEXT SQLTEXT: SELECT ID,DateTime,Length,ZDATE,ZTIME,Sys_Alerts,Sys_AppErrors,Sys_CPUIOwait,Sys_CPUIdle,Sys_CPUKernel,Sys_CPUUser,Sys_CSPSession,Sys_ECPResponse,Sys_...

What is the MONEXT anyways? Mon as in monitor? SYSMON extensions?
Any idea on how to get the MONEXT into my namespace or any workaround would be appreciated.

Best regards,

Magnus