Issue Description
When downloading and installing the Jamf Now Enrollment profile for a Mac during Open Enrollment we get the error, "Could not be installed due to an unexpected error. <MDMResponseStatus:400>"
This is often caused by a device that was previously enrolled into Jamf Now being re-enrolled.
Troubleshooting Steps
Remove the device record and attempt Open Enrollment again.
In Jamf Now, go to Devices and select the device record for the device receiving this error.
Click Remove from My Devices in the upper-right corner.
Note this only shows if the device is listed as unenrolled.
Follow the Jamf Now documentation page Enrolling a Mac using Open Enrollment to try the enrollment process again.