"Has improper value for" is a predefined property to track input errors for irregular value annotations that was likely caused by type or allowed value restrictions.
en:Accession number of the part of the specimen within the collection, if it is different from the accession number of the specimen as stored in the table CollectionSpecimen, e.g. "M-29834752" +
Accession number of the part of the specimen within the collection, if it is different from the accession number of the specimen as stored in the table CollectionSpecimen, e.g. "M-29834752" +