When entering a quid into an Item field one gets a helpful autocomplete message that can be used to verify if the correct item was selected:
This is what the request looks like: https://www.wikidata.org/w/api.php?action=wbsearchentities&search=Q112795079&format=json&errorformat=plaintext&language=en&uselang=en&type=item (note that label and description are present)
On the other hand, when entering a lid into a Lexeme field one gets an not very helpful autocomplete message that only contains the entered id
This is what the request looks like: https://www.wikidata.org/w/api.php?action=wbsearchentities&search=L1234&format=json&errorformat=plaintext&language=en&uselang=en&type=lexeme (note that label and description are missing)
Also note that label and description are present when searching for a lemma:
https://www.wikidata.org/w/api.php?action=wbsearchentities&search=%E4%BD%95&format=json&errorformat=plaintext&language=en&uselang=en&type=lexeme
