Issue of apigatewayv2 on new Jakarta region (ap-southeast-3)

Question

I am having issue on creating API Gateway on new region, Jakarta.
By running cli to test listing all API on Jakarta, it tuns out to be failed as below.

```
$ aws apigatewayv2 get-domain-names --region ap-southeast-3

An error occurred (BadRequestException) when calling the GetDomainNames operation: {"message": "1 validation error detected: Value \'arn:aws:lambda:ap-southeast-3:xxxxxxxxxxxx:function:\' at \'functionName\' failed to satisfy constraint: Member must satisfy regular expression pattern: (arn:(aws[a-zA-Z-]*)?:lambda:)?([a-z]{2}((-gov)|(-iso(b?)))?-[a-z]+-\d{1}:)?(\d{12}:)?(function:)?([a-zA-Z0-9-_\.]+)(:(\$LATEST|[a-zA-Z0-9-_]+))?"}
```

While I use the same cli but different region, it works as I expected.
Is there any configuration on IAM user that I need to look into? I already have Administrator role but the issue still persists.

Answer

The root cause is that in the ap-southeast-3 region, API Gateway does not support v2 APIs (WebSocket and HTTP APIs).If you make v1 API calls such as `aws apigateway get-domain-names --region ap-southeast-3`, it works just fine. You can find the same in [the console](https://ap-southeast-3.console.aws.amazon.com/apigateway/main/apis?region=ap-southeast-3).

Issue of apigatewayv2 on new Jakarta region (ap-southeast-3)

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