A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hi
In SharePoint CSOM API, there is KeepBoth only in MoveCopyOptions Class.
Power Automate Connector for SharePoint provideIf another folder is alreadyParameter****inCopy folder action ,so SharePoint Power Automate offers the option to overwrite a destination folder.
Should you try to test SharePoint Rest API? In my opinion, SharePoint Rest API provide Replace Parameter very likely.
May I suggest accord with your requirement? since our category focus on general troubleshooting and built-in features in Microsoft 365 and Office, and we have a dedicated channel : Questions - Microsoft Q&A related queries. For you to be assisted properly, we sincerely recommend you go to that community and post a new thread. You can click "Ask a question" to post a question there.
Best Regards,