9xx - Local Use

907      Overlay code

Add a 907 field.  When copy cataloging new materials, there is almost always an order record created in Sierra and a brief bibliographic record for the item already in the system.  When copy cataloging you will essentially be replacing the brief record with a new, full record (otherwise known as the process of overlaying).  In order to do this, you need to enter the unique Sierra number assigned to the item into a 907 field so the computer will recognize which specific record to replace.  In Sierra, the unique number that you use is the bibliographic record number, which will always be preceded by a period and the letter “b” (ex. “.b30442783”).

938      Vendor Specific Ordering Data

 938 fields are automatically deleted upon Import.  This field contains information for ordering the item from a vendor and is not needed.  

909 Cataloging Statistics field

949      Item creation – Constant Data

Add a 949 field.  The 949 field can be used to create an item record for the book you are processing thus avoiding the need to do the item creation in Sierra.  You can use already existing constant data or enter the essential information into the proper subfields manually.

949 fields are repeatable so, you can create multiple items to be attached to the same bibliographic record.  The most common example for the repeated use of the 949 would be for multivolume sets or books with accompanying discs.