Issue description
App installation fails with "The MDM request is invalid" when deploying applications to personal (BYOD) devices enrolled to Jamf Pro via User Enrollment.
This can can be caused by the app settings selected. Since MDM cannot take over management of applications already installed on User Enrolled devices, having those options selected will cause the installation to fail (even if the app is not already installed).
Troubleshooting
Check the app record to see if "Make app managed when possible" and "Convert unmanaged app to managed" checkboxes are selected.
Click Edit for the app record, uncheck the "Make app managed when possible" box and and then click Save.
Note - if you have a mixture of enrollment types receiving the app, consider have two app records: one for personal/User Enrolled devices that does not have this setting selected and one app record for other enrollment types that does have it selected.