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Current constraints of MARC Field Protections:

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  • Given 5 qualifiers: [Field Number], [Indicator 1], [Indicator 2], [Subfield], [Data]
  • And each qualifier can have a wildcard(*) as its value to denote a criteria match of any value
  • # definition of each qualifier should be added here
  • When a MARC Field entry components matches all 5 qualifiers
  • Then the MARC Field is protected

Scenario 2: MARC Update When an entry already exists exactly, NON-REPEATING

  • Given a MARC field entry that is exists and is protected and is non-repeating
  • And a collection of incoming MARC field entries that intend to overwrite the existing MARC field entry
  • When any incoming MARC field entry is exactly the same as the protected existing entry
  • Then the incoming MARC field will be discarded

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