In the cases that I've seen, this error relates to an education payload within the profile.
As things stand now, the Meraki SM team is unable to find any errors in the profiles we are sending to the end devices. We've tried to reproduce the issue in house, but so far this has not been reproducible.
Meraki has recently opened a case with Apple to better understand what could be causing these issues.
If you have an open case regarding this issue, the support engineer should be able to provide updates on the issue as the case develops with apple. Please feel free to link your assigned engineer to this community page.
-Dalton