When publishers supply GBIF with a scientific name, this name is sometimes not found in the GBIF taxonomic backbone. In these cases, the occurrence record gets a data quality flag called taxon match higher rank. This means that GBIF was only able to match the name to a higher rank (genus, family, order …).
This is a companion discussion topic for the original entry at https://data-blog.gbif.org/post/2022-03-24-reasons-why-names-don-t-match-to-the-gbif-backbone/