This relation documents STIS association names that were originally specified by TRANS, but that were later combined with other singletons to form DMS associations during reprocessing. To determine what the members of the original association were, the members of the DMS association can be found in asn_members, and the added members specified in stis_old_asns can be subtracted. This will result in the original set of ASN members. See OPUS OPRs 56359 and 55219 for details. C9 The name of a TRANS-specified STIS association that has been combined with singleton exposures to form a DMS association during reprocessing. C9 The name of a STIS DMS association created during reprocessing by combining the members of an original TRANS-specified association with original singletons. The original singletons are documented in the stis_old_asns table. STIS_OLD_ASNS_TYPE STIS TRANS/DMS association mapping table OPUS unique clustered ignore_dup_key