Sccm direct membership collection not updating
SCCM and MDT offer a great deal of variables, but the documentation of them is sometime not so friendly.
I have created some tables below of the variables, which are a little easier to filter, sort and generally find the variable you are after.
If the last action was skipped because the step was disabled or the associated condition evaluated to false, this variable is not reset, which means it still holds the value for the previous action. The task sequence can have the following values: SMS - specifies that the task sequence is started by using the Configuration Manager client.
UFD - specifies that the task sequence is started by using USB media and that the USB media was created in Windows XP/2003.
The source data is: SCCM 2007 – https://technet.microsoft.com/en-us/library/bb632442SCCM 2012 – https://technet.microsoft.com/en-au/library/gg682064MDT 2013 – Stores the current running task sequence deployment unique ID.
It uses the same format as a Configuration Manager software distribution deployment ID.
HD - specifies that the task sequence was started from a hard disk (prestaged media only).PXE - specifies that the task sequence is started from PXE.