Custom document link sharing with Sharepoint and Power Automate
Usecase You need to share a file from sharepoint to an external user, in an automated process. No manual ‘create link’ actions needed on the sharepoint site. You can then email this link to your external client.
Default on Power automate for a sharing link for sharepoint, is to set the Link Scope to either:
Anyone with the link (including anonymous)
People in your organization
This explains how you can use the ‘people with existing access’ sharing type.