Encoding Level. Former YUL Encoding Level was 4. Under RDA, the BSR RDA Encoding Level should be blank (full standard) unless the record was created under YUL minimal record standards which are separately documented. On OCLC, Encoding Level 4 at one time gave catalogers greater flexibility to update master records. OCLC now allows most cataloging contributors to edit master records even if they are coded as full level. Exception: recent OCLC policy is to leave the Encoding Level of LC CIP as 8 even if the record has been upgraded to full level.
Cataloging Form code "a" is never used for RDA records.
|Type of Cataloging||06||by content|
|Bibliographic Level||07||by mode of issuance|
|Type of Control||08||a or blank||Use "a" only for collections under archival control|
|Encoding Level||17||blank||Full level (OCLC: I)|
|Cataloging Form||18||i||ISBD punctuation|
The field itself is mandatory for audio recordings, cartographic resources, graphic materials, moving images, computer files (Type of Cataloging "m"), rare graphic materials, and microform textual monographs. Mandatory 007 bytes depend on the type of format; refer to the BSR MAP. For microform textual monographs, only the SMD is mandatory for BSR.
For the digital aspect of formats (except byte 06 m - computer file), use 007 Specific Material Designation "r" for remote access resources & "o" for direct access resources. Only the SMD is mandatory.
For textual monographs, mandatory fields are: Publication Status/Type of Date, Dates 1-2, Place of publication, production, or execution, Form of item, Language, Modified Record, and Cataloging Source. See the MAP (pages 20 and following) for mandatory 008 fixed fields for other formats, including microform textual monographs.