During an installation of VCF 9.0.1 while leveraging a brownfield import of an existing vCenter Server, the process will fail. You may see similar errors presented such as the following:
error request helper 31 result status code from set datasource 400 sddc_manager_helper 864 could not configure datasource debug sddc manager helper 865 baseline datasource validation failed
VCF 9.0.1
These errors are typically caused by a firewall / port connectivity issue.
Confirmation of the port requirements should be done to ensure the physical infrastructure is set to allow proper communications between the different VCF components.
Port requirements can be reviewed here: https://ports.broadcom.com/view