Tier-1 or Tier-0 gateway deletion fails due to referenced objects

Products

• VMware NSX
• VMware NSX-T Data Center

Issue/Introduction

• You are removing a Tier-1 or Tier-0 gateway for decommissioning purposes
• An error occurs when attempting to delete via the NSX UI:
  "Error: The object <Tier-1 or Tier-0 name> cannot be deleted as either it has children or it is being referenced by other objects <object name> (Error code: 500030)"
  
  
• The /var/log/proton/nsxapi.log file on an NSX Manager identifies which objects are referenced. Note that the log may only show the first object involved in a deletion attempt. A subsequent attempt in the UI might result in a new error referencing a different object.

Environment

VMware NSX
VMware NSX-T Data Center

Resolution

You need to remove the configuration or objects associated with the Tier-1 or Tier-0 gateway prior to removing it.
This could be segments, interfaces, load balancers, etc.
After you have done that, you will be able to remove the Tier-1 or Tier-0 successfully.

Additional Information

If you are removing Edge nodes, refer to: Remove NSX Edge Nodes from an Edge Cluster