Converge to VCF 9.x fails due to false detection of Enhanced Linked Mode

Products

• VMware SDDC Manager / VCF Installer

Issue/Introduction

• vCenter is not in Enhanced Linked Mode
• However, when attempting to execute VCF Converge, the following error is displayed during the validation step:
  "VcManager <FQDN of VCSA>: The vCenter Server should not be in ELM"
• The following error is logged in the VCF Installer:

/var/log/vmware/vcf/operationsmanager/operationsmanager.log

YYYY-MM-DDThh:mm:ss.###+0000 ERROR [vcf_om,6a144c3d5db13e84c462b6##########,####] [c.v.v.b.p.t.v.v.ResourceStateValidator,pool-x-thread-x] Entity constraint validation with expression vcNodes.size() == 1 on entity with name <FQDN of VCSA> of type VcManager failed with exception
org.springframework.expression.spel.SpelEvaluationException: EL1011E: Method call: Attempted to call method size() on null context object

Environment

VCF 9.x

Cause

vmware-topologysvc is stopped.

Resolution

To start the required services, connect to vCenter via SSH and execute the following commands in bash.

service-control --start vmware-topologysvc

or

service-control --start --all