Terraform error: List of string required

│ Error: Invalid value for module argument
│
│   on main.tf line 8, in module "yourModuleName":
│    8:   subnet_ids = var.subnet_id
│
│ The given value is not suitable for child module variable "subnet_ids" defined at
│ ../path/to/your/terraformodule.tf :79,1-22: list of string required.

• Solution: If your element is from type list make user provide values using proper format: [value1, value2] or [value1] if your list of strings only have one value.
• Example: variable "vpc_security_group_ids" { default = ["sg-9038b461666bf999a"] }

Related

• Terraform types: list
• Terraform error: List of object required
• Terraform plan execution errors

See also

• Terraform types: string, number, bool, list/tuple, map/object, type constraints
• Terraform variables, types, env variables, variables.tf, .tfvars, nullable, validation, terraform.tfvars
• terraform plan: [ -refresh-only | -lock=false | -target | -var-file | will be created | --help], Terraform plan errors, Terraform plan examples, Terraform plan execution errors, (known after apply)