(subfields used by the Repository and Update Inventory Import Profiles recommended by Dani. We recommend you keep these the same for consistency. You still can choose to use different subfields, but you will need to keep track of which subfields you use for importing OCLC records and each of your vendors you have profiles for.)
$b-Barcode
$c-Item Policy
$d-Library
$e-Location
While it is not required that you use specific subfields for certain pieces of information, we recommend you keep these the same for all of your profiles for consistency.
*The Vendor title number will probably be in the 035 $b for most vendors
While it is not required that you use specific subfields for certain pieces of information, we recommend you keep these the same for all of your profiles for consistency.
982 - Additional PO Line Reference Field (value used by the Update Inventory import profile to match bibliographic records)
Recommendation: use subfield $a.