Do you have any archlog files that needs to be back up? If not, you can expect messages like this.
19513, 00000, "failed to identify sequential file"
// *Cause: Unable to identify the sequential file.
// *Action: Check additional messages, and check if the file exists on media.
27206, 00000, "requested file not found in media management catalog"
// *Cause: A backup file used in a recovery manager catalog maintenance
// command was not found in the media management catalog.
// *Action: Retry the command with a different file.