Oracle Message RMAN-06413 - channel string does not support proxy copy

ERRORchannel string does not support proxy copy
CAUSEThe channel which was specified for this backup or restore does not support proxy copy. This could be because the media management software used by the target database does not support proxy copy, or because the channel is of type DISK, which never supports proxy copy.
ACTIONIf this is a backup, then either allocate a non-disk channel, or do not use the PROXY option. If this is a restore, then a channel of the same type which created the proxy backup was allocated, but now does not support proxy copy. If proxy copy is no longer supported by the media management software at the target database, the CROSSCHECK command should be used so that those backups will not be considered for further restores.