How to Pass the version for SSM Parameter while creating on CloudFormation

Question

I am getting the below error while creating the SSM Parameter via CF passign version.

Property validation failure: [Encountered unsupported properties in {/}: [Version]]
**My Securitygroup.Yaml**

AWSTemplateFormatVersion: 2010-09-09
Description: Basic SSH Security Group.

Resources:
  MySSHSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: my new SSH SG
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: '22'
          ToPort: '22'
          CidrIp: 0.0.0.0/0
       
  MYSSHSecuritygroupParameter:
    Type: AWS::SSM::Parameter
    Properties:
      Name: Security
      Type: String
      **Value: !Ref MySSHSecurityGroup**
      Tier: Standard
      **Version: 1**
      Description: My SSH Securitygroup on SSM Parameter

Please help on this how to pass with Version number in CF, i need to create difference type of versions needs to create on the Same Parameter using CF.

Answer

You can't specify the version of Parameter when you create it, which is a result of the underlying [API](https://docs.aws.amazon.com/systems-manager/latest/APIReference/API_PutParameter.html) also not allowing that. Parameters will have a new version created automatically when they are updated.

I'd suggest instead creating multiple Parameters for your different requirements, which will also allow you better visibility and tracking of changes in the future. You can use `/` characters in your Parameter names to create a hierarchy to help with organisation (and access control).

Answer

You could pass the Parameter Store parameter key in as a string and the version as a string. Then use a dynamic reference to that parameter. See: [SSM parameters](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/dynamic-references.html#dynamic-references-ssm)

How to Pass the version for SSM Parameter while creating on CloudFormation

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