VCF on VxRail: Cloud Builder Deployment Error "Incorrect set of vmnics provided for host"

During the initial validation using the parameters file, hosts fail with the following errors on the UI:

"Incorrect set of vmnics provided for host <hostname>"

Further, in the vcf-bringup-debug.log, you can find errors similar to the following:

2023-02-10T18:33:40.722+0000 [bringup,37a076d9d575d015,4419] INFO  [c.v.e.s.c.v.ExecutionContextToValidationConverter,http-nio-0.0.0.0-9080-exec-1] Collecting processing task errors: VCF_ERROR_INTERNAL_SERVER_ERROR for validation aggregation
...
2023-02-10T18:34:16.281+0000 [bringup,37a076d9d575d015,8e74] DEBUG [c.v.e.s.o.c.c.ContractParamBuilder,pool-4-thread-3] Contract task Skip Remaining Validation Items On Failure Event input: {"exceptionMessage":"AuditJsonSpec has detected some issues all remaining tasks should be skipped.","responses":[{"errorCode":"JSON_SPEC_VALIDATIONS.error","arguments":[],"context":{"severity":"ERROR","bundleName":"com.vmware.evo.sddc.common.validation.errors.messages","validation.taskId":"7f000001-8638-1087-8186-3c9ac2f2011f"},"message":"JSON Spec Validation Failed","nestedErrors":[{"errorCode":"VMNIC_INFO_INCORRECT","arguments":["<hostname 01>"],"context":{"severity":"ERROR","bundleName":"com.vmware.evo.sddc.common.validation.errors.jsonerrors"},"message":"Incorrect set of vmnics provided for host <hostname 01>"},{"errorCode":"VMNIC_INFO_INCORRECT","arguments":["<hostname 02>"],"context":{"severity":"ERROR","bundleName":"com.vmware.evo.sddc.common.validation.errors.jsonerrors"},"message":"Incorrect set of vmnics provided for host <hostname 02>"},{"errorCode":"VMNIC_INFO_INCORRECT","arguments":["<hostname 03>"],"context":{"severity":"ERROR","bundleName":"com.vmware.evo.sddc.common.validation.errors.jsonerrors"},"message":"Incorrect set of vmnics provided for host <hostname 03>"},{"errorCode":"VMNIC_INFO_INCORRECT","arguments":["<hostname 04>"],"context":{"severity":"ERROR","bundleName":"com.vmware.evo.sddc.common.validation.errors.jsonerrors"},"message":"Incorrect set of vmnics provided for host <hostname 04>"}]}]}

Make all ESXi hostnames lowercase.

1. Connect to the host directly with a vSphere Client and select the ESXi host
2. Select Configure - TCP/IP configuration
3. Select the Default TCP/IP Stack
4. Observe if the hostname displayed is in mixed Upper and Lower case letters
5. If yes, Select the Default TCP/IP Stack, and then click the Edit button
6. Set the hostname with all lowercases as per your bring up sheet
7. Retry again the workflow.

(If this does not apply, please further investigate in the Cloud Builder logs)