MARC record validation rules - Subfield configuration

Create a local subfield

A local subfield is any field that is not a part of the MARC bib/authority standard as defined by the Library of Congress.

To create a local subfield field, use the POST /specification-storage/fields/{fieldId}/subfields
The POST body must include at minimum: code and label.

POST /specification-storage/fields/fb183a49-f958-4e2d-aef1-e8cb57b2e94b/subfields

{
  "code": "a",
  "label": "OCLC control number of merged and deleted record",
  "repeatable": true,
  "required": true
}

Update a subfield

From the GET /specification-storage/specifications/{MARC bib/authority record validation specification id}?include=all, copy the following values in that response for the subfield code you want to update: subfield id, code, repeatable, required
To update the field tag, use PUT /specification-storage/subfields/{subfieldId} and the body should include at minimum these values: code and label.

PUT /specification-storage/subfields/e2643466-44de-42e6-85bc-828de33c45f4

{
                    "code": "a",
                    "label": "General note",
                    "repeatable": false,
                    "required": true
}

Delete a subfield code

From the GET /specification-storage/specifications/{MARC bib/authority record validation specification id}?include=all, copy the subfield id
Use endpoint DELETE /specification-storage/subfields/{subfieldId}

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