Workaround: Put at least one InfoItem with any value inside the object in the write request
The reason for the problem is in two parts:
Write request handling checks which parts of the request actually need insertion in which db, there is simply a missing check for empty object.
In read request handling the O-MI Node checks for missing items from the missing values of the result. If the result doesn't have values it is probably missing and the result is 404 not found.
Problem occurs if writing an O-DF Object without any InfoItem or an InfoItem without any value.
The read request returns code 404.