I needed to configure a new SharePoint User Profile Synchronization Connections but got interrupted by the error "Sorry, something went wrong, Unable to process Create message".
As usual it was time to hit the ULS where I found the following error
After digging around the Internet for a while I checked the event viewer to see if it told me anything more, none of the advices online seemed to work for me. This is what I found
Or to be more precise
Arghs, really that simple? My client has the letter ö in their organization name which isn't a part of the a-z library.
Simply replacing the letter by o the connection name solved the issue.