if you run this report, it will create files in SAP app server.
so it will be file to file without any mapping. this applies to only emp scenario.
receiver side it will be SFTP.
sender side it will be file or sftp adapter based on your company settings. if basis can mount ECC folder into SAP PI, then you can use file adapter with NFS protocol.
or if you can write scripts and run ECC, then you no need for PI, as scripts can send the files to SFTP. this is rare case.