This returns a 500 error in case of a blocking error when storing
 inventory.
It also puts information in the status line along with the 500 error so
 that the fusioninventory-agent cli tool show the error.
Errors on sub-objects are logged only so that one missing objectClass or
 attribute from the schema does not block the whole inventory, seeing as
 fusioninventory fields seem to evolve each version.

issue #4348