CustomResource attribute error

Question

Hello, Im getting the following when trying to create a CF stack from a template:

```
CustomResource attribute error: Vendor response doesn't contain BastionSecurityGroup key in object arn:aws:cloudformation:us-east-1:edited:stack/ta-linux/edited|BastionInfo|edited in S3 bucket cloudformation-custom-resource-storage-useast1
```

My code for that looks like this:

```
  BastionIngressRule:
    Type: AWS::EC2::SecurityGroupIngress
    Properties:
      GroupId: !GetAtt EDITEDGroup.GroupId
      IpProtocol: tcp
      FromPort: 22224
      ToPort: 22224
      SourceSecurityGroupId: !GetAtt BastionInfo.BastionSecurityGroup

```
Any ideas?

danjhd · Answer

It would appear that the resource called BastionInfo is a custom resource? The error message is explaining that this custom resource does not have a property called BastionSecurityGroup and therefore the !GetAtt function is failing.

I suggest checking your custom resource to verify that you have the correct property name.

CustomResource attribute error

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