OCLC Developers Network News OCLC Developers Network News Latest developments, technical briefs, and activities at Developer Network APIs are the first built using new strategy and infrastructure New versions of the WorldCat Search and Metadata APIs were the first developed using OCLC's new API strategy and cloud-based infrastructure. WMS Acquisitions API release, 26 March 2021 The next release of the WMS Acquisitions API is scheduled for 26 March 2021.  Call for proposals: DevConnect 2021 OCLC invites you to contribute your insights and projects to DevConnect 2021. Planned maintenance: Classify User Interface, 25 February OCLC will be performing maintenance on the Classify User Interface on 25 February 2021 at 9:00am Eastern US (UTC -5).  Search API 2.0 ‘heldinState’ parameter change On 12 February 2021 we are installing a new version of WorldCat Search API 2.0 so the ‘heldinState’ parameter aligns with ISO standards and better supports global holdings. Planned maintenance: Classify User Interface, 15 February OCLC will be performing maintenance on the Classify User Interface on 15 February 2021 at 11:00am Eastern US (UTC -5).  Planned maintenance: Classify API OCLC will be performing quarterly maintenance on the experimental Classify API on 4 February 2021 from 10:00am – 10:45am Eastern US (UTC -5).  Upcoming WMS Circulation API Changes OCLC is making update to our Circulation APIs to support staff hold notes. Upcoming WMS Acquisitions API Changes OCLC will be making changes to the WMS Acquisitions API to better support Ship-To and Bill-To addresses on Purchase Orders and Invoices Upcoming WMS NCIP API Changes OCLC will be making two changes to the WMS NCIP Service in the coming weeks. On 3 May 2020, OCLC will install changes which affect the Patron Profile – UpdateRequestItem message. On 7 June 2020, OCLC will install changes affecting both the Staff and Patron Profiles.