The Crossref Curriculum

Removing metadata from a record

All Crossref metadata may be updated by re-supplying your metadata record with changes included. Although you may not want to fully delete a metadata record, you may need to remove certain types of non-bibliographic metadata from the record. For example, if metadata was submitted by mistake, or when content migrates from one member to another. Some metadata provided for text and data mining or Similarity Check is member-specific and must be updated or removed when content is acquired by another member.

How to remove bibliographic metadata from an existing record:

  • Metadata Manager: search for the record you wish to edit, make changes, and deposit it again
  • Web deposit form: resubmit all the metadata (including the changes) for the record you wish to update, and resubmit
  • OJS: change the metadata in OJS, and update the record using the Crossref XML export plugin
  • Depositing XML with Crossref: make changes to your XML file and re-submit it to Crossref

When a record is updated with bibliographic metadata, registered non-bibliographic metadata (including administrative and structural) is retained as part of the metadata record unless we are explicitly instructed to remove it.

Metadata that needs to be explicitly deleted includes:

To see what is in the metadata that you have inherited, extract the metadata as an XML file using either the deposit harvester, or one of these REST API queries:

  • To retrieve all items by ISSN, use this API query: http://0-api.crossref.org.libcat.lafayette.edu/works?filter=issn:2090-8091&rows=1000 and replace 2090-8091 with the ISSN for your title
  • To retrieve all items by title, use this API query: http://0-api.crossref.org.libcat.lafayette.edu/works?query.container-title=Connections and replace Connections with your title
  • You can adjust the API query to retrieve just one element per DOI, such as full-text links (including for Similarity Check) - replace 2090-8091 with the ISSN for your title: http://0-api.crossref.org.libcat.lafayette.edu/works?filter=issn:2090-8091&rows=1000&select=DOI,link

You can edit this XML to remove or replace metadata, and then re-deposit the XML (to update the fields or remove them).

To update fields (but not remove them), you can use the web deposit form to upload supplemental metadata as a .csv file. Use the depositor report to extract a list of DOIs for a title, for example: https://0-data.crossref.org.libcat.lafayette.edu/depositorreport?pubid=J309888 (replace J309888 with your publication’s ID - find this by clicking on your member name and then publication name in the depositor report and use these to create a .csv file for upload. Learn more about creating a .csv file to be used as a supplemental metadata upload.

You can also delete non-bibliographic metadata by supplying an empty parent element (see examples below), and include it in a metadata update or submit it as a resource deposit. Note that metadata submitted as part of a Crossmark update needs to be removed within Crossmark metadata (see examples below).

Remove all Crossmark data

Remove all Crossmark data from a record by supplying an empty Crossmark element in a metadata deposit:

<first_page>1</first_page>
  <last_page>3</last_page>
</pages>
<crossmark/>
<doi_data>
   <doi>10.5555/12345678</doi>
   <resource>http://0-psychoceramics.labs.crossref.org.libcat.lafayette.edu/10.5555-12345678.html</resource>
</doi_data>

or as part of a resource deposit:

<crossmark_data>
  <doi>10.5555/12345678</doi>
  <crossmark/>
</crossmark_data>

Remove funding, clinical trial, or license data from Crossmark

Funding, license, and clinical trial data may all be supplied as part of a Crossmark update. If you need to remove funding, license, or clinical trial metadata from your Crossmark metadata, you must submit the appropriate empty element within a Crossmark update. Note the other Crossmark metadata must be present as well to be retained.

In this example, funding data is removed from a Crossmark update:

<crossmark>
  <crossmark_version>1</crossmark_version>
  <crossmark_policy>10.5555/crossmark_policy</crossmark_policy>
  <crossmark_domains>
    <crossmark_domain>
      <domain>psychoceramics.labs.crossref.org</domain>
    </crossmark_domain>
  </crossmark_domains>
  <crossmark_domain_exclusive>true</crossmark_domain_exclusive>
  <custom_metadata>
    <assertion name="orcid" label="ORCID" group_name="identifiers" group_label="Identifiers" order="0" href="http\://orcid.org/0000-0002-1825-0097">http\://orcid.org/0000-0002-1825-0097</assertion>
    <assertion name="received" label="Received" group_name="publication_history" group_label="Publication History" order="0">2012-07-24</assertion>
    <assertion name="accepted" label="Accepted" group_name="publication_history" group_label="Publication History" order="1">2012-08-29</assertion>
    <assertion name="published" label="Published" group_name="publication_history" group_label="Publication History" order="2">2012-09-10</assertion>
    <program xmlns="https://0-www.crossref.org.libcat.lafayette.edu/fundref.xsd"/>
    <program xmlns="https://0-www.crossref.org.libcat.lafayette.edu/AccessIndicators.xsd"/>
    <program "https://0-www.crossref.org.libcat.lafayette.edu/clinicaltrials.xsd"/>
</custom_metadata>
</crossmark>

Remove funding data

Remove funding data from a non-Crossmark record by supplying an empty fundref program element in a metadata deposit:

<first_page>1</first_page>
  <last_page>3</last_page>
</pages>
<program xmlns="https://0-www.crossref.org.libcat.lafayette.edu/fundref.xsd"/>
<doi_data>
   <doi>10.5555/12345678</doi>
   <resource>http://0-psychoceramics.labs.crossref.org.libcat.lafayette.edu/10.5555-12345678.html</resource>
</doi_data>

or as part of a resource deposit:

<fundref_data>
  <doi>10.5555/12345678</doi>
 <program xmlns="https://0-www.crossref.org.libcat.lafayette.edu/fundref.xsd"/>
</fundref_data>

Remove license data

Remove license data from a non-Crossmark record by supplying an empty AccessIndicators program element in a metadata deposit:

<first_page>1</first_page>
  <last_page>3</last_page>
</pages>
<program xmlns="https://0-www.crossref.org.libcat.lafayette.edu/AccessIndicators.xsd"/>
<doi_data>
   <doi>10.5555/12345678</doi>
   <resource>http://0-psychoceramics.labs.crossref.org.libcat.lafayette.edu/10.5555-12345678.html</resource>
</doi_data>

or as part of a resource deposit:

<lic_ref_data>
  <doi>10.5555/12345678</doi>
 <program xmlns="https://0-www.crossref.org.libcat.lafayette.edu/AccessIndicators.xsd"/>
</lic_ref_data>

Remove relationship data

Remove relationship data by supplying an empty relationship program element in a metadata deposit:

<first_page>1</first_page>
  <last_page>3</last_page>
</pages>
<program xmlns="https://0-www.crossref.org.libcat.lafayette.edu/relations.xsd"/>
<doi_data>
   <doi>10.5555/12345678</doi>
   <resource>http://0-psychoceramics.labs.crossref.org.libcat.lafayette.edu/10.5555-12345678.html</resource>
</doi_data>

or as part of a resource deposit:

<doi_relations>
  <doi>10.5555/12345678</doi>
 <program xmlns="https://0-www.crossref.org.libcat.lafayette.edu/relations.xsd"/>
</doi_relations>

Remove full-text, Similarity Check, and multiple resolution URLs

Full-text, Similarity Check, and multiple resolution secondary URLs may be removed from a record by submitting an update containing an empty collection tag that includes the appropriate property:

  • Full-text uses property text-mining
  • Similarity Check URLs use the property crawler-based
  • Multiple resolution secondary URLs use the property list-based
  • The country-code resolution feature uses the property country-based

For example, to remove text and data mining URLs from a record submit the following as part of a metadata deposit:

<doi_data>
  <doi>10.5555/515151</doi>
  <resource>http://0-annalsofpsychoceramics.labs.crossref.org.libcat.lafayette.edu/abstract/515151/</resource>
  <collection property="text-mining"/>
</doi_data>

They may be included in a metadata deposit (above) or as part of a resource deposit:

<doi_resources>
  <doi>10.5555/515151</doi>
  <collection property="text-mining"/>
</doi_resources>

Remove references

Remove a reference list from a record by supplying an empty citation_list element in a metadata deposit:

<first_page>1</first_page>
  <last_page>3</last_page>
</pages>
<doi_data>
   <doi>10.5555/12345678</doi>
   <resource>http://0-psychoceramics.labs.crossref.org.libcat.lafayette.edu/10.5555-12345678.html</resource>
</doi_data>
<citation_list/>

or as part of a resource deposit:

<doi_citations>
  <doi>10.5555/12345678</doi>
<citation_list/>
</doi_citations>

Last Updated: 2020 April 8 by Laura J. Wilkinson