Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # module.supernode[0].netbox_virtual_machine.supernode will be updated in-place
  ~ resource "netbox_virtual_machine" "supernode" {
      ~ custom_fields = {
          - "proxmox_vm_id" = "" -> null
        }
        id            = "59"
        name          = "supernode-dev-0"
      - site_id       = 12 -> null
        tags          = []
        # (11 unchanged attributes hidden)
    }

  # module.supernode[1].netbox_virtual_machine.supernode will be updated in-place
  ~ resource "netbox_virtual_machine" "supernode" {
      ~ custom_fields = {
          - "proxmox_vm_id" = "" -> null
        }
        id            = "60"
        name          = "supernode-dev-1"
      - site_id       = 12 -> null
        tags          = []
        # (11 unchanged attributes hidden)
    }

Plan: 0 to add, 2 to change, 0 to destroy.

Acquiring state lock. This may take a few moments...
module.supernode[0].netbox_virtual_machine.supernode: Modifying... [id=59]
module.supernode[1].netbox_virtual_machine.supernode: Modifying... [id=60]
module.supernode[0].netbox_virtual_machine.supernode: Modifications complete after 1s [id=59]
module.supernode[1].netbox_virtual_machine.supernode: Modifications complete after 1s [id=60]
╷
│ Warning: Possibly unsupported Netbox version
│ 
│   with provider["registry.terraform.io/e-breuninger/netbox"],
│   on providers.tf line 14, in provider "netbox":
│   14: provider "netbox" {
│ 
│ Your Netbox version is v3.7.1. The provider was successfully tested against
│ the following versions:
│ 
│   3.7.0
│ 
│ Unexpected errors may occur.
╵
Releasing state lock. This may take a few moments...

Apply complete! Resources: 0 added, 2 changed, 0 destroyed.