Most of item discovery error messages in LLD does not contain item identification, for example

Cannot create item: name is empty.
Cannot create item: name is empty.
Cannot create item: name is empty.
Cannot update item: name is empty.
Cannot update item: name is empty.

Investigate if it would be possible to add some identification, for example item key like it's done in dependent item validation errors.

Also check other discoverable entities - hosts, triggers, graphs.