Terraform
Infrastructure as code from HashiCorp.
Official documentation- Terraform: Reference to undeclared input variableterraform validate and plan fail with Reference to undeclared input variable when code uses var.name without a variable block in the same module. How to fix it.
- Terraform: Error: Unsupported argument. An argument named "x" is not expected hereTerraform fails with Unsupported argument, An argument named "name" is not expected here, when a block sets an attribute its resource or module lacks.