availability_zone not supported in azurerm_public_ip block

[amar-mandai]

resource "azurerm_public_ip" "pip" {
count = var.enable_public_ip_address == true ? var.instances_count : 0
name = lower("pip-vm-${var.virtual_machine_name}-${data.azurerm_resource_group.rg.location}-0${count.index + 1}")
location = data.azurerm_resource_group.rg.location
resource_group_name = data.azurerm_resource_group.rg.name
allocation_method = var.public_ip_allocation_method
sku = var.public_ip_sku
sku_tier = var.public_ip_sku_tier
domain_name_label = var.domain_name_label
availability_zone = var.public_ip_availability_zone
tags = merge({ "ResourceName" = lower("pip-vm-${var.virtual_machine_name}-${data.azurerm_resource_group.rg.location}-0${count.index + 1}") }, var.tags, )

lifecycle {
ignore_changes = [
tags,
ip_tags,
]
}
}

error:

╷
│ Error: Unsupported argument
│
│ on .terraform/modules/virtual-machine/main.tf line 73, in resource "azurerm_public_ip" "pip":
│ 73: availability_zone = var.public_ip_availability_zone
│
│ An argument named "availability_zone" is not expected here.
╵
Error: Terraform exited with code 1.
Error: Process completed with exit code 1.