| April 14, 2026 |
v1.3 |
Updated ICPSR input guidance for Geographic Coverage Area. |
| April 11, 2025 |
v1.2 |
Updated field definitions to improve clarity. |
| June 28, 2024 |
v1.1 |
Removed guidance regarding null entries for National Institute of Justice studies. Several fields previously required "None" when otherwise a field would be left blank. Updated internal guidance for 'external source id' and 'funding purpose' elements. Added 'study number' and distributor 'order' elements to address earlier oversights. |
| Oct. 30, 2023 |
v1 |
Initial release and publication of the ICPSR Metadata Schema. |