The Build Agent {1} is running as a different user {2} and local paths can only be mapped to a single workspace. To resolve ...

{0} The Build Agent {1} is running as a different user {2} and local paths can only be mapped to a single workspace. To resolve this issue, you can configure the Build Service to run as the user who owns the conflicting workspace, or you can delete the workspace using the 'tf workspace' command.