This feature holds the story for more advanced MARC queries split into R2 or R3.

Current situation or problem:
Given FOLIO doesn't yet support searching of MARC records in source record storage (SRS), this feature would provide an API that FOLIO implementers could use to query MARC. The API could be used for a variety of different purposes, such as identifying records for export, updates, and clean up. It could also, eventually, be used to support UI(s) for searching MARC within FOLIO, but that UI is out of scope for this feature. This feature will NOT use elastic search, implementation details to come.

In scope

Allow for search based on the presence or absence of a field, subfield, indicator, or fixed field position
Allow for date range search based on dates present in a subfield
Allow consumers to search new and/or local MARC tags and have them indexed appropriately

Out of scope
A search UI for MARC data
Searching inventory data

Use case(s)
Searching MARC data in order to identify records for data export
Searching MARC data in order to match records to be updated with data import
Searching MARC data as part of ETL clean up processes that libraries run to main data quality
Searching MARC data to identify records in cases where only examination of the MARC allows accurate selection of records