E3008 Property "VpcId" can Fn::GetAtt when creating AWS::EC2::TransitGatewayAttachment

[rgd11]

cfn-lint version: (cfn-lint --version)
0.26.2

Description of issue.

• Trying to create a AWS::EC2::TransitGatewayAttachment in us-gov-west-1
• Assigning an SSM Parameter value to VpcId

  rVpc:
    Type: AWS::EC2::VPC
    Properties:
      ...
  rSsmParameterVpcId:
    Type: AWS::SSM::Parameter
    Properties:
      ...
      Value: !Ref rVpc
  rTransitGatewayAttachment:
    Type: AWS::EC2::TransitGatewayAttachment
    Properties:
      ...
      VpcId: !GetAtt rSsmParameterProdVdmsVpcId.Value

• Results in

E3008 Property "VpcId" can Fn::GetAtt to a resource of types [AWS::EC2::SecurityGroup, AWS::EC2::Subnet] at Resources/.../Properties/VpcId/Fn::GetAtt

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• Feature request:
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[PatMyron]

#1288

https://github.com/aws-cloudformation/cfn-python-lint/blob/67fc5bb210b020e3226261f966a01726d574475d/src/cfnlint/data/ExtendedSpecs/all/04_property_values/aws_ec2.json#L74-L76

https://github.com/aws-cloudformation/cfn-python-lint/blob/bf18663bf9c69722e8264801ae08e3ef90c87157/src/cfnlint/data/ExtendedSpecs/all/03_value_types/aws_ec2.json#L28-L43