Error "LCMCOMMON80001 - unexpected status code: 405" while attempting to expand the VA disk (/data) on Fleet Management Appliance

Products

• VCF Operations

Issue/Introduction

• Navigate to VCF Operations UI > Fleet Management > Lifecycle > VCF Management >  Settings > System Details > Expand Storage fails with error: LCMCOMMON80001

• The /var/log/vrlcm/vmware_vrlcm.log file indicates a 405 error during the execution of LcmVaExtendDiskTask:

  com.vmware.vim.vmomi.client.common.UnexpectedStatusCodeException: Unexpected status code: 405
  during execution of: com.vmware.vrealize.lcm.plugin.lcmplugin.core.task.LcmVaExtendDiskTask

• Log analysis reveals that the request attempts to connect to the appliance's own hostname (e.g., https://<Fleet manager_FQDN>/sdk/vimService) instead of the registered vCenter Server SDK URL.

Environment

VCF Operations 9.0.x

Cause

This issue occurs due to an incorrect host reference in the request metadata. The workflow is incorrectly populating the vCenterHost parameter with the Fleet Management appliance's FQDN rather than the registered vCenter Server FQDN. This causes the disk extension task to attempt an API connection to itself, resulting in an HTTP 405 error.

Resolution

To resolve this issue and successfully expand the disk partition, follow these steps:

1. Log in to the VCF Operations UI

2. Navigate to Fleet Management > Lifecycle > VCF Management >  Settings > System Details > Expand Storage

3. When initiating the request, ensure that the vCenter FQDN input field is explicitly set to your correct registered vCenter Server and not the Fleet manager appliance.

4. Submit the task.