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Repeatable and Non-repeatable fields:
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Sample Field Protection Settings
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Field Protection Examples and Expected Actions
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MARC field protection scenarios
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Background
This information is current as of the Morning Glory release
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Before Morning Glory, MARC field protections were only invoked if a MARC Update action is included in the job profile. As of Morning Glory, field protections will also be invoked automatically/implicitly when the job profile includes an Update Instance action.
When evaluating data in a subfield, MARC field protections are not case-sensitive. For example $a NcD, $a NCD, $a Ncd, $a ncd, $a ncD would all be considered equivalent and duplicates of each other.
For data in a subfield, the field protection is based on the entire data string.
One master list of MARC field protections is maintained in Settings/Data import.
MARC field protections are controlled at the tenant level, though field protections can be overridden by using an update MARC Bibliographic or Authority record action with appropriate field mapping for MARC bibliographic or Authority record.
MARC Repeatable and Non-repeatable fields
MARC field protections work differently for repeatable and non-repeatable fields. Here is a list of those fields (spanning all three MARC record types):
Non-repeatable: LDR, 001, 002, 003, 004, 005, 008, 009, 010, 018, 036, 038, 040, 042, 044, 045, 066, 073, all 1xx fields, 240, 243, 245, 254, 256, 263, 306, 357, 378, 384, 507, 514, 663, 664, 665, 666, 675, 682, 788, 841, 842, 844, 882, and 999 with indicators = ff
Note that the fields 001 and 999 ff are restricted for FOLIO use and automatically protected by the system
The following non-repeatable control fields are disallowed from field protection: LDR, 002, 003, 004, 005, 009
Repeatable: all other MARC fields
Control fields:
The following control fields are disallowed from Field protection: LDR, 002, 003, 004, 005, 009
The following control fields are allowed for Field protection, but no indicators or subfields are permitted: 006 (R), 007 (R), 008 (NR)
Use of Wildcards (asterisk)
Within the field protection settings, wildcards are currently allowed for for all fields:
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