The Crossref Curriculum

Metadata removal markup guide

For most metadata elements, you can just update the record to delete elements. However, if you are sending us XML, there are some non-bibliographic metadata elements where you have to go through a two-stage process - firstly send us a submission to delete this element, and then send us a further submission to add in the replacement data.

Metadata that needs to be explicitly deleted includes:

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-only 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.lib.rivier.edu/10.5555-12345678.html</resource>
</doi_data>

or as part of a resource-only 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.lib.rivier.edu/fundref.xsd"/>
    <program xmlns="https://0-www-crossref-org.lib.rivier.edu/AccessIndicators.xsd"/>
    <program "https://0-www-crossref-org.lib.rivier.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.lib.rivier.edu/fundref.xsd"/>
<doi_data>
   <doi>10.5555/12345678</doi>
   <resource>http://0-psychoceramics.labs.crossref.org.lib.rivier.edu/10.5555-12345678.html</resource>
</doi_data>

or as part of a resource-only deposit:

<fundref_data>
  <doi>10.5555/12345678</doi>
 <program xmlns="https://0-www-crossref-org.lib.rivier.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.lib.rivier.edu/AccessIndicators.xsd"/>
<doi_data>
   <doi>10.5555/12345678</doi>
   <resource>http://0-psychoceramics.labs.crossref.org.lib.rivier.edu/10.5555-12345678.html</resource>
</doi_data>

or as part of a resource-only deposit:

<lic_ref_data>
  <doi>10.5555/12345678</doi>
 <program xmlns="https://0-www-crossref-org.lib.rivier.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.lib.rivier.edu/relations.xsd"/>
<doi_data>
   <doi>10.5555/12345678</doi>
   <resource>http://0-psychoceramics.labs.crossref.org.lib.rivier.edu/10.5555-12345678.html</resource>
</doi_data>

or as part of a resource-only deposit:

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

Remove text and data mining, Similarity Check, and multiple resolution URLs

Text and data mining 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:

  • Text and data mining uses property text-mining
  • Similarity Check URLs use the property crawler-based
  • Multiple resolution secondary URLs use the property list-based
  • The <strong>country-code resolution</strong> 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.lib.rivier.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-only 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.lib.rivier.edu/10.5555-12345678.html</resource>
</doi_data>
<citation_list/>

or as part of a resource-only deposit:

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

Page owner: Laura J. Wilkinson   |   Last updated 2020-April-08