When you try to upload the Management Center backup to a SCP server you receive an error message stating:
SCP File Transfer Failed
INFO JobStepExecutor - 0003 com.example.cm.job.service.internal.SingleJobExecutor Step DA1CA16B-3358-4589-BE66-A7F585D5BC2F has failed with error: KEYED_EXCEPTION{"errorId":"/BC/MC/CORE/BACKUP/MC_BACKUP_CLI_SCRIPT_ERROR","properties":{"cliOutput":"\t Securing backup archive ...\r\n\t Exporting backup archive ...\r\nSCP File Transfer Failed: \r\n"}} com.example.cm.job.StepExecutionException: /BC/MC/CORE/BACKUP/MC_BACKUP_CLI_SCRIPT_ERROR: {cliOutput= Securing backup archive ...
Exporting backup archive ...
SCP File Transfer Failed:
This is due to a bug that was found in the Management Center OS.
Bug number: MC-434
A fix has been released in MC 2.2.2.4
"MC-434 - Exporting a backup via SCP times out after 30 seconds."
It is recommended to upgrade to 2.2.2.4 if you are experiencing this issue.