Description: This document discusses phase 1 of interoperability testing as part of the Z-Interop project. The ZDoctor perl program, which is proprietary software provided by Sirsi provides a way to verify the indexing policies established on the Unicorn online catalog reference implementation. ZDoctor produces a report that identifies the MARC fields and subfields that are indexed to support various Z39.50 Bib-1 Use Attributes. For Phase 1 interoperability testings, four Bath Profile searches will be used: Title search - keyword, Author search - keyword, Subject search - keyword, Any search - keyword. The indexing policies to support these searches were established according to the Z-Interop document, 'Indexing Guidelines to Support Z39.50 Profile Searches.' This document presents the output of the ZDoctor program.