These are the changes to the platform REST API since its public release after a major remake with several new functions and a new role and role accounts structure in version 5.1.0. 

5.1.0 to 5.2.0

• Made it possible to specify the state in 'CDIServer - Create access', and thereby create platform-managed accesses without activating them immediately.
  
  

• Added a new API for activating an invited platform-managed access

  HTTP Method	URI Scheme
  POST	/server/access/{accessId}/activate

• Added a new API for retrieving a user agreement that is to be accepted and signed when activating an invited platform-managed access 

  HTTP Method	URI Scheme
  GET	/server/access/{accessId}/user-agreement-for-activation

• Changed the 'agreementTemplateId' property to mixed for 'ExternalRole'. Must not be specified for Create external role, but must be specified and not changed for Update external role. See property description in ExternalRole for additional information.

5.0.0 (internal release) to 5.1.0