Enrollment being dropped/lost

[rkilbrei]

I'm no JAMF expert, I'm just an ITSM manager responsible for tracking our inventory. So please excuse any wrong use of terms.
We've been enrolling our mobile devices through user-initiated enrollment. Devices are confirmed enrolled and we then have a scheduled import of the devices into our CMDB. What we've experienced is devices being "dropped" from JAMF. We know they were at one time enrolled because there is a CI entry in our CMDB. Having to get the user to then re-enroll is difficult as some of our users are "in the field" and don't use our network for extended periods of time. Along that same line, we believe devices are being dropped that are "inactive" (not check in) for periods of time.

Is there a set/default inactive period that would cause this to happen? and Is there a fix/setting that we're missing or is this normal behavior?

[RobertHammen]

Users can remove the profiles from their devices if they're not supervised; that may be what's happening.

Is your JSS exposed to the Internet (or do you have a limited-access JSS in its place)? That may allow users to enroll in device management from the field.

If your devices were enrolled with Apple's Device Enrollment Program (DEP), they could not activate without contacting your JSS. You can also supervise the devices OTA and prevent users from removing any management profiles...