When the Source field of the Instance's is MARC, then most of the Instance's fields are controlled by the underlying MARC Bibliographic record, which is stored in Source Record Storage (SRS). The MARC Bib can be viewed from the Instance by selecting Actions/View source.

MARC mappings are used to make equivalencies between MARC information and applicable FOLIO Instance and Holdings fields.

Links to Mapping Documentation & Spreadsheets

Folijet Instance from MARC (Excel file that explains the MARC Bib-Inventory Instance default mapping - Be sure to use the FOLIJET Instance from MARC tab)
Instance TO MARC 2019 (Spreadsheet that maps FOLIO Instance records to simplified MARC on export - specifically for FOLIO Instance "on-the-fly" records)
MARC Default Mapping Rules JSON
Documentation on CLI editing of the default rules
Notes on Customizing Default MARC-Inventory Maps and Release Updates
Explaining CQL String Matching
Query Search - Inventory Beta Spreadsheet
Inventory Instance JSON Schema
MARC To Inventory Mappings Folder
Metadata Source Codes (Instance)
Inventory - Metadata Elements
Recommended MFHD to Inventory Holdings Mapping
EAD (ArchivesSapce) to Inventory Mapping
Metadata Management SIG Folder
Data Elements used for Reporting in the Library Data Platform (spreadsheet)

Fields in the Instance Record Not Controlled by the Underlying MARC Bibliographic Record

Suppress from discovery checkbox – this function is used to prevent the FOLIO Instance record from displaying in a local discovery layer. It is a non-MARC field that is stored with the MARC record in SRS.
Staff suppress checkbox
Previously held checkbox
Cataloged date
Instance status
Statistical code
Administrative note
Nature of content
Instance relationships (Parent/child instances) – includes relationships for bound-with materials, monographic series and multipart monographs

Note that the Inventory Holdings and Inventory Item are not controlled by the underlying MARC Bibliographic record. Inventory Holdings and items can be created or updated via data on a MARC bibliographic record, but are not controlled/synchronized with MARC bibliographic records on an ongoing basis.

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