The entry in question *does* carry a suResidenceTSO attribute, and apparently none of the objectclasses of the entry allow it. Most likely this entry was created by slapadd without any schema checking. As I've noted in the past, the server performs a full schema check during any modification, and so it can complain about attributes that aren't touched by the modification, if they exist in the entry but aren't allowed by the current schema.
objectClass: suCampusResident suResidencePhone: xxxxxxxxxxxxxxxxxxxxxxxx suResidenceRequiredAttribute: xxxxxxxxxxxxxxxxxxxx suResidenceRequiredAttribute: 10 063 2F*1A suResidenceTSO: 10 063 2F*1A modifyTimestamp: 20040111105444Z createTimestamp: 20030516013954Z
--Quanah
-- Quanah Gibson-Mount Principal Software Developer ITSS/TSS/Computing Systems ITSS/TSS/Infrastructure Operations Stanford University GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html