DPM saves the recovery item in a custom directory structure in the following format:

DPM_<BackupTime>Recovered_At_<BackupTime>_<RecoveryTime>D-VolVirtualMachines<VMName>Virtual Hard Disks<VHDX-Name>

If the recovery job fails, verify the alert under the Monitoring task view that DPM server will raise to inform you about what has happened. It also gives you a guide to rectify the issue for a possible scenario for the recovery to succeed.