[Bug]: aws_vpc_ipam_pool_cidr_allocation cannot be imported with description argument without replacement

[GlennChia]

Terraform Core Version

1.9.1

AWS Provider Version

5.60.0

Affected Resource(s)

aws_vpc_ipam_pool_cidr_allocation

Expected Behavior

When importing an IPAM Allocation that has been created with a description we expect that the resource will be imported without replacement

Actual Behavior

Terraform is not able to import with the description without replacement. When a description is specified, Terraform shows 1 to import, 1 to add, 0 to change, 1 to destroy. This is because the resource does not write computed description to state and as a result, a specified description has a value that differs from null in state. Since description is a force_new argument, Terraform attempts to delete the IPAM allocation and recreate it.

Relevant Error/Panic Output Snippet

No response

Terraform Configuration Files

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "5.60.0"
    }
  }
}

provider "aws" {
  region = "ap-southeast-1"
}

import {
  to = aws_vpc_ipam_pool_cidr_allocation.this
  id = "ipam-pool-alloc-id_ipam-pool-id"
}

resource "aws_vpc_ipam_pool_cidr_allocation" "this" {
  ipam_pool_id = "ipam-pool-id"
  cidr         = "10.0.0.0/23"
  description  = "example description"
}

Steps to Reproduce

Step 1: Create an IPAM allocation in the AWS Console. At a high-level, create an IPAM -> Create an IPAM Pool in the default scope -> Create an IPAM Allocation in the IPAM pool. Create this IPAM with a description

Step 2: Import the IPAM Allocation in Terraform with the code above

Terraform displays the following

Terraform will perform the following actions:

  # aws_vpc_ipam_pool_cidr_allocation.this must be replaced
  # (imported from "ipam-pool-alloc-id_ipam-pool-id")
  # Warning: this will destroy the imported resource
-/+ resource "aws_vpc_ipam_pool_cidr_allocation" "this" {
        cidr                    = "10.0.0.0/23"
      + description             = "example description" # forces replacement
      ~ id                      = "ipam-pool-alloc-id_ipam-pool-id" -> (known after apply)
      ~ ipam_pool_allocation_id = "ipam-pool-alloc-id" -> (known after apply)
        ipam_pool_id            = "ipam-pool-id"
      + resource_id             = (known after apply)
      ~ resource_owner          = "111122223333" -> (known after apply)
      ~ resource_type           = "custom" -> (known after apply)
    }

Plan: 1 to import, 1 to add, 0 to change, 1 to destroy.

Reason: The provider does not read the description, as a result, it shows as a null in the state

Debug Output

No response

Panic Output

No response

Important Factoids

No response

References

• API_GetIpamPoolAllocations. Contains ipamPoolAllocationSet in the response
• IpamPoolAllocation. Contains the description

Would you like to implement a fix?

Yes

[github-actions]

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[github-actions]

Warning

This issue has been closed, meaning that any additional comments are hard for our team to see. Please assume that the maintainers will not see them.

Ongoing conversations amongst community members are welcome, however, the issue will be locked after 30 days. Moving conversations to another venue, such as the AWS Provider forum, is recommended. If you have additional concerns, please open a new issue, referencing this one where needed.

[github-actions]

This functionality has been released in v5.61.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.