From your description, it appears to not just be a Defender source, but an SCCM source of knowledge you need.
Malware Alert Levels Use the following table to identify the different Endpoint Protection alert levels that might be displayed in
reports, or in the Configuration Manager console.
Failed Endpoint Protection failed to remediate
the malware. Check your logs for details of the error.
Note: For a list of Configuration Manager and Endpoint Protection log
files, see the "Endpoint Protection" section in the Log files in
System Center Configuration Manager topic.
Removed Endpoint Protection successfully removed the malware.
Quarantined Endpoint Protection
moved the malware to a secure location and prevented it from running
until you remove it or allow it to run.
Cleaned The malware was
cleaned from the infected file.
Allowed An administrative user
selected to allow the software that contains the malware to run.
No Action Endpoint Protection took no action on the malware. This might
occur if the computer is restarted after malware is detected and the
malware is no longer detected; for instance, if a mapped network drive
on which malware is detected is not reconnected when the computer
Blocked Endpoint Protection blocked the malware from
running. This might occur if a process on the computer is found to