### Terraform Version ```shell Terraform v1.14.0-beta2 on linux_amd64 also present in latest non-beta release Terraform v1.13.3 on linux_amd64 ``` ### Terraform Configuration Files ``` terraform { required_version = "~> 1.13" required_providers { aws = { source = "hashicorp/aws" version = "~> 6.0" } } backend "s3" { bucket = "s3bucketnamethatexists" key = "state" region = "ap-southeast-6" use_lockfile = true } } ``` ### Debug Output ``` 2025-10-15T13:13:29.081+1300 [INFO] Terraform version: 1.14.0 beta2 2025-10-15T13:13:29.081+1300 [DEBUG] using github.com/hashicorp/go-tfe v1.91.0 2025-10-15T13:13:29.081+1300 [DEBUG] using github.com/hashicorp/hcl/v2 v2.24.0 2025-10-15T13:13:29.081+1300 [DEBUG] using github.com/hashicorp/terraform-svchost v0.1.1 2025-10-15T13:13:29.081+1300 [DEBUG] using github.com/zclconf/go-cty v1.16.3 2025-10-15T13:13:29.081+1300 [INFO] Go runtime version: go1.25.1 2025-10-15T13:13:29.081+1300 [INFO] CLI args: []string{"terraform", "init", "--backend-config=backend.tf.infra-platform", "--reconfigure"} 2025-10-15T13:13:29.081+1300 [TRACE] Stdout is a terminal of width 158 2025-10-15T13:13:29.081+1300 [TRACE] Stderr is a terminal of width 158 2025-10-15T13:13:29.081+1300 [TRACE] Stdin is a terminal 2025-10-15T13:13:29.081+1300 [DEBUG] Attempting to open CLI config file: /home/ec2-user/.terraformrc 2025-10-15T13:13:29.081+1300 [DEBUG] File doesn't exist, but doesn't need to. Ignoring. 2025-10-15T13:13:29.081+1300 [DEBUG] ignoring non-existing provider search directory terraform.d/plugins 2025-10-15T13:13:29.082+1300 [DEBUG] ignoring non-existing provider search directory /home/ec2-user/.terraform.d/plugins 2025-10-15T13:13:29.082+1300 [DEBUG] ignoring non-existing provider search directory /home/ec2-user/.local/share/terraform/plugins 2025-10-15T13:13:29.082+1300 [DEBUG] ignoring non-existing provider search directory /usr/local/share/terraform/plugins 2025-10-15T13:13:29.082+1300 [DEBUG] ignoring non-existing provider search directory /usr/share/terraform/plugins 2025-10-15T13:13:29.082+1300 [INFO] CLI command args: []string{"init", "--backend-config=backend.tf.infra-platform", "--reconfigure"} Initializing the backend... 2025-10-15T13:13:29.090+1300 [TRACE] Meta.Backend: merging -backend-config=... CLI overrides into backend configuration 2025-10-15T13:13:29.090+1300 [TRACE] Meta.Backend: built configuration for "s3" backend with hash value 1410938009 2025-10-15T13:13:29.090+1300 [TRACE] Meta.Backend: backend has not previously been initialized in this working directory 2025-10-15T13:13:29.090+1300 [TRACE] Meta.Backend: moving from default local state only to "s3" backend 2025-10-15T13:13:29.091+1300 [DEBUG] checking for provisioner in "." 2025-10-15T13:13:29.091+1300 [DEBUG] checking for provisioner in "/home/ec2-user" 2025-10-15T13:13:29.091+1300 [TRACE] backend/local: state manager for workspace "default" will: - read initial snapshot from terraform.tfstate - write new snapshots to terraform.tfstate - create any backup at terraform.tfstate.backup 2025-10-15T13:13:29.091+1300 [TRACE] statemgr.Filesystem: reading initial snapshot from terraform.tfstate 2025-10-15T13:13:29.091+1300 [TRACE] statemgr.Filesystem: snapshot file has nil snapshot, but that's okay 2025-10-15T13:13:29.091+1300 [TRACE] statemgr.Filesystem: read nil snapshot 2025-10-15T13:13:29.091+1300 [TRACE] Meta.Backend: ignoring local "default" workspace because its state is empty ╷ │ Error: Invalid region value │ │ on terraform.tf line 11, in terraform: │ 11: backend "s3" { │ │ Invalid AWS Region: ap-southeast-6 ╵ ``` ### Expected Behavior Terraform should have initialised as the bucket exists in the region and terraform is run with admin credentials. This works with a bucket in another region (ap-southeast-2). ``` $ aws s3api get-bucket-location --bucket s3bucketnamethatexists { "LocationConstraint": "ap-southeast-6" } ``` ### Actual Behavior Terraform throws an error that it does not recognise the region ```╷ │ Error: Invalid region value │ │ on terraform.tf line 11, in terraform: │ 11: backend "s3" { │ │ Invalid AWS Region: ap-southeast-6 ╵ ``` ### Steps to Reproduce 1. `terraform init` ### Additional Context The New Zealand region opened a month and a half ago. ### References https://github.com/hashicorp/terraform-provider-aws/issues/44637 is the same issue raised against the AWS Provider. I think this is an S3 backend issue rather than an AWS Provider issue. ### Generative AI / LLM assisted development? _No response_