vSphere Lifecycle Manager Failed to Prepare NSX-T Cluster

As vSphere Lifecycle Manager failed to set and apply NSX as a solution on the cluster, none of the hosts in the cluster were prepared as transport nodes. View the error state on the cluster in NSX Manager UI.

Login to NSX node
On the NSX Manager, go to System → Fabric → Nodes → Host Transport Node.
From the Managed by drop-down menu, select the vCenter Server.

Identify the failed cluster to view the error state. Click the error link to open a popup window. Click Resolve to initiate transport node profile realization on the cluster.
Have a look around as the error could be :
- Profiles
- Transport Zones
- Compute Managers

In my case, I had an error with Registration Status. System → Fabric → Compute Managers

Although Connection Status showed UP, the NSX-T could not create a service account in the vCenter due to a lack of privileges.

By clicking on the RESOLVE button I was asked to provide credentials for vCenter. After that Registration Status changed to Registred and I was able to run pre-check.

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