In reply to pascal Nicolas.

Hi Pascal,

To copy a report from a folder to another in batch, SAS Viya provides the CLI (Command-line Interfaces) to export and import reports easily.

If you need to use restAPI, you have to do some coding work. Please refer the Folder API in CoreServices, such as get a folder member, add a member to a folder or update a folder member. I put the link for your quick reference: https://developer.sas.com/apis/rest/CoreServices/#get-a-folder-member

Hope this helps.