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 if from type list make user provide values using proper format: [value1, value2]

See also

• Terraform, OpenTofu, Terrakube.org, Installation, Terraform AWS, Terraform GCP, Terraform commands, Terraform Cloud, Terraform Enterprise (TFE), HCL, HIL, meta-arguments, providers, modules, resource, provisioners, data sources, backends: remote backends, examples, configuration files, state files, variables, types, Terraform Registry, conditionals: depends_on, functions, Blocks, dynamic blocks, errors, Terragrunt, Terraformer, Terratest, Terraform certifications, Terraform map type, Terraform Associate, Terraform: list type, TF_VAR_, TF_LOG, Terraform provider versioning, Terraform Style Conventions, Required version, Terraform plugin, Terraform Named Values, tags, Changelog, tfsec, tflint, Operators, Expressions: for, splat, Debugging, Namespaces, Terraform Landing Zones, CDKTF, Atmos