I have used the documents tool to upload an Excel file to our managed iPads. I set the right group so that the file should be uploaded to every device we have.
I did this yesterday. When I checked in just now I saw that there was no upload to the devices. I took one iPad and checked it. No sign of the document anywhere.
The activity protocol of the device showed the following error message (in german):
"Die Mobile Device Management-Anfrage ist ungültig." wich translates to MDM request is void.
Any ideas here on how to solve this issue?