A holdings record cannot be deleted if there is at least one item record associated with it. Usually holdings records are deleted when the associated item records have been deleted.
There might be cases where holdings records without associated item records were migrated and they need to be deleted. Holdings without associated items can be deleted:
To delete a holdings record in the MD Editor:
When a bib record has multiple holdings record there is the option to delete the holdings records from the List of Holdings. To delete Holdings records from the List of Holdings: