The backup may not start at all - Or the backup may fail during the action BackupSDDCManager configuration.
/var/log/vmware/vcf/operationsmanager/operationsmanager.log
//---------------------------------------------------------------------------------------//
2022-08-26T08:16:13.694+0000 ERROR [vcf_om,1c639fff4c660770,c88a] [c.v.e.s.e.h.LocalizableRuntimeExceptionHandler,http-nio-127.0.0.1-7300-exec-2] [399DLQ] GET_BACKUP_FAILED_INVALID_ID Failed to retrieve backup workflow, invalid id
com.vmware.evo.sddc.common.core.error.InvalidInputException: Failed to retrieve backup workflow, invalid id
//---------------------------------------------------------------------------------------//
This happens because of the failures with reference to the file loading - generally in a fairly scaled environment.
This issue is resolved in VMware Cloud Foundation 4.5.2.
To workaround the issue, please follow the below mentioned steps:
Rename the /opt/vmware/vcf/sddc-support/status.json (or status-tmp.json) to something else.
Restart the SoS rest service - systemctl restart sosrest.service.