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This repository was archived by the owner on Mar 23, 2026. It is now read-only.

Setting TEST_AWS_ACCOUNT_ID does not change the account ID in ARNs #1728

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#1731
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Setting TEST_AWS_ACCOUNT_ID does not change the account ID in ARNs#1728
#1731
@Jaystified

Description

@Jaystified
Jaystified
opened on Nov 6, 2019

It is my understanding that setting an environment varialbe TEST_AWS_ACCOUNT_ID for localstack sets that as the AWS account for the user in localstack.

However, setting it does not actually change any ARNs. For example:

  1. Start localstack using TEST_AWS_ACCOUNT_ID="111111111111" DEBUG=1 localstack start
  2. Deploy anything with an ARN (in this example I deployed a lambda)
  3. Check the ARN. Example output for lambda:
$ awslocal lambda list-functions
{
    "Functions": [
        {
            "FunctionName": "localtest-local-hello",
            "FunctionArn": "arn:aws:lambda:us-east-1:000000000000:function:localtest-local-hello",
            "Runtime": "nodejs10.x",
            "Role": "test_role",
            "Handler": "handler.hello",
            "CodeSize": 3077,
            "Description": "",
            "Timeout": 6,
            "MemorySize": 1024,
            "LastModified": "2019-11-06T06:43:53.451+0000",
            "CodeSha256": "V77gR13o90ET7+XquXBBc3Rxr1qDu1bE7S+A0Wbx5ys=",
            "Version": "$LATEST",
            "TracingConfig": {
                "Mode": "PassThrough"
            },
            "RevisionId": "3d4ed679-c1a9-4b7e-ad9e-f27e8543c5e9"
        }
    ]
}

ARN is still 000000000000

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