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884 Description Conversion Information (R)

Find the field definition and scope, indicators, subfield codes, and guidelines for applying content designations for field 884.

Indicators and subfield codes

First Indicator


blank         Undefined

Second Indicator


blank         Undefined

Subfield Codes

‡a       Conversion process (NR)

‡g       Conversion date (NR)

‡k       Identifier of source metadata (NR)

‡q       Conversion agency (NR)

‡u       Uniform Resource Identifier (R)


Field definition and scope

This field provides information about the origin of a MARC record which has been converted by machine from another metadata structure.

Guidelines for applying content designations


Both indicators are undefined; each contains a blank (blank).

First Indicator - Privacy

blank - Undefined

Second Indicator - Undefined

blank - Undefined


‡a - Conversion process

Subfield ‡a contains data that identifies the process used to produce the data contained in the MARC record. The subfield may contain a process name or some other description.

‡g - Conversion date

Subfield ‡g contains the date on which the data was converted. Date is recorded in the format yyyymmdd in accordance with ISO 8601, Representation of Dates and Times.

‡k - Identifier of source metadata

Subfield ‡k contains the identifier associated with the description from which the data was obtained.

‡q - Conversion agency

Subfield ‡q contains the MARC organization code of the institution using the process/activity to convert the data. Code from: MARC Code List for Organizations.

‡u - Uniform Resource Identifier

Subfield ‡u contains the Uniform Resource Identifier (URI), for example a URL or URN, which identifies the process used to convert the data contained in the MARC record.

The URI can lead to a textual or structured description of the process, or the URL that was used to generate the record's content can be provided directly, i.e., a URL invoking a web service or conveying an API call.