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Home | News | Code of Practice Release 5.1.1

Code of Practice Release 5.1.1

30 June 2026

We have published the latest fix and feature release of the COUNTER Code of Practice, R5.1.1.

New features and links to best practice

Bug fixes

  • Fix list of reports for Data_Type in Section 3.2.2 (Table 3.l)
  • Fix invalid ISIL pattern in COUNTER API Specification
  • Fix Status.Registry_Record in the COUNTER_API Specification
  • Fix missing DR_D1 for Unique_Item_Investigations and Unique_Item_Requests in Section 3.3.3 (Table 3.s)
  • Fix Section 4 to require Institution_ID in report headers
  • Fix regular expression for proprietary identifiers in the COUNTER API Specification
  • Having JSON Report_Filters sorted differently for Standard Views leads to a validation error
  • Fix the COUNTER API Specification to only allow Release 5.1 in the /r51/reports response
  • Fix definitions of the include_parent_details and include_component_details parameters in the COUNTER API Specification
  • Fix description of Standard Views of the Title Report in Section 3.1.2.3
  • Fix broken link and add missing entry for R5.1.0.1 CHANGELOG

Clarifications and minor text edits

  • Add missing Article_Version in IR samples for COUNTER R5.1
  • Add a proprietary Institution_ID to the sample reports
  • Add missing rules for counting redirect HTTP status codes to Section 7.1
  • Add missing keywords from RFC 2119 to Section Conventions
  • Clarify audit tests for the COUNTER API (formerly sushi)
  • Clarify audit timelines in Section 9.3
  • Clarify appropriate security for the COUNTER API
  • Clarify handling of reports without usage and use of Exceptions 303X
  • Clarify which Report Filters and Attributes are optional for the report providers to implement
  • Update custom report example in Section 11.1
  • Update COUNTER URL domain
  • Update Glossary for R5.1.1
  • Rename COUNTER Validation Tool to COUNTER Validator
  • Merge the Code for Research Data into the COUNTER Code of Practice
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