title: AppSync Data API is not available in this region
body: <p>I am trying to connect AppSync to an Aurora serverless data source but it shows this when I try to create the data source through the AWS console:</p>
  
  <p><a href="https://i.stack.imgur.com/wUKBC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wUKBC.png" alt="Error: The Data API is not available in this region."></a></p>
  
  <p>My AppSync API is in ap-southeast-1 (Singapore) and my Aurora Serverless database is also in the same region. According to <a href="https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/data-api.html#data-api.regions" rel="nofollow noreferrer">the AWS docs</a>, the Data API is avaiable in that region. Here is my cloudformation template to deploy the DB Cluster:</p>
  
  <pre><code>  DbCluster:
      Type: AWS::RDS::DBCluster
      DependsOn: DbSecret
      Properties:
        DatabaseName: !Ref DatabaseName
        DBClusterIdentifier: !Ref DbClusterId
        DeletionProtection: false
        EnableHttpEndpoint: true
        Engine: aurora
        EngineMode: serverless
        EngineVersion: 5.6.10a
        MasterUsername: !Join ['', ['{{resolve:secretsmanager:', !Ref DbSecret, ':SecretString:username}}']]
        MasterUserPassword: !Join ['', ['{{resolve:secretsmanager:', !Ref DbSecret, ':SecretString:password}}']]
        ScalingConfiguration:
          AutoPause: true
          MinCapacity: 1
          MaxCapacity: 2
          SecondsUntilAutoPause: 300
        StorageEncrypted: true
  </code></pre>
  
  <p>The CloudFormation template deploys fine, and, as you can see, the <code>EnableHttpEndpoint</code> has been set to <code>true</code>, which means that the Data API is enabled. I have also checked that it is enabled by going into the AWS console to try and modify the database:</p>
  
  <p><a href="https://i.stack.imgur.com/S3dIo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/S3dIo.png" alt="Web Service Data API is enabled on the AWS console"></a></p>
  
  <p>I have tried searching the internet for any clues but I could not find anything. I'm not sure if this is a bug or I am doing something wrong. How do I get pass this error to create my data source?</p>