When OCLC adds SCIPIO records into WorldCat using a data sync collection, data in the following fields is matched against existing SCIPIO records in WorldCat:
Auction house 110 ‡a ‡b
Title 245 ‡a ‡b ‡n ‡p
Date of sale 033 ‡a
Sale code 024 ‡a
Check data in these fields and subfields especially carefully for accuracy in SCIPIO records you add using a data sync collection.