title: Cannot Enable Data API on Aurora Serverless
body: <p>We're trying to enable Data API for our Aurora Serverless Cluster which has been set up to be in our private subnets in our VPC. We've tried enabling it via the console (i.e. Modify > Select Data API > Apply Immediately). There weren't any errors on after submitting, but when we get back to the "Modify" page, the "Data API" checkbox is still unselected.
  We have also tried enabling Data API as described on the documentation <a href="https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/data-api.html" rel="nofollow noreferrer">https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/data-api.html</a> , but the response still shows us that the HttpEndpointEnabled is still false.</p>
  
  <p>My guess is that this could be related to Private Subnets or Security Groups. Any feedback is appreciated!</p>
  
  <pre><code>$ aws rds modify-db-cluster --db-cluster-identifier our-database --enable-http-endpoint
  {
      "DBCluster": {
          "Capacity": 8, 
          "MasterUsername": "admin", 
          "HttpEndpointEnabled": false, 
          "ReadReplicaIdentifiers": [], 
          "VpcSecurityGroups": [
              {
                  "Status": "active", 
                  "VpcSecurityGroupId": "sg-0a66b09ade97573f0"
              }
          ], 
  </code></pre>
  
  <p>The database was created with CloudFormation if that matters</p>