I understand this was hard to find.   One point that is not relevant now, but may help with the general understanding:   If you make a typo in the field names, avro will just ignore the actions of the right field and instead process the new field, which will be empty.    This is technically quite a different problem than when you actually make a typo in the Type, as those are possible to check against the list of possible types.   So detection of typos in field names is hard, and despite what the name suggests it seems LogicalType is actually a field name from Nifi perspective.  ... View more