NVDS to VDS migration fails with error - "Failed to find any cluster id contained in the request body"

Products

• VMware NSX-T Data Center

Issue/Introduction

• Precheck ID is successfully generated for the cluster.
• NVDS to CVDS migration fails with following error for precheck status summary API -
  
  GET https://<nsx-manager-ip>/api/v1/nvds-urt/status-summary-by-cluster/<precheck_id>

{
  "precheck_id" : "####-####-####-####-####",
  "precheck_status" : "FAILED",
  "precheck_issue" : [ {
    "component" : "Cluster ids in request body",
    "objid" : "",
    "error" : "Failed to find any cluster id contained in the request body",
    "recommendation" : "Please make sure cluster ids are configured correctly",
    "_protection" : "NOT_PROTECTED"
  } ]
}

• If using CLI to run the API call you can use the following command -
  curl -k -u admin -X GET https://<nsx-manager-ip>/api/v1/nvds-urt/status-summary-by-cluster/<precheck_id>

Environment

VMware NSX-T Data Center

Cause

Compute manager 'Connection Status' is 'Down' in NSX manager.

Resolution

• Check why vCenter Connection Status is Down.
• Edit compute manager and update password/thumbprint if required.
  Steps -
  - In NSX manager UI go to System > Fabric > Compute Managers
  - Check Connection status. It should be 'Up'. See screenshot below for reference.
  - If the status is down. Click edit and update password and thumbprint. This will re-register compute manager. Check connection status again, it should be Up.