We encounter this issue when trying to connect a SharePoint list to Azure Devops via Power Automate.
"Failed to retrieve dynamic outputs. As a result, this operation's outputs might not be visible in subsequent actions....Connection 'connectionId' to 'shared_visualstudioteamservices' cannot be used to activate this flow, either because this is not a valid connection or because it is not a connection you have access permission for. Either replace the connection with a valid connection you can access or have the connection owner activate the flow, so the connection is shared with you in the context of this flow."
NOTE: our Power Automate and Sharepoint resources are hosted on my organization Azure tenant. Our ADO subscription is hosted on an external partner organization Azure tenant.