Unable to get mapping

!FindInMap

 An error occurred (ValidationError) when calling the CreateChangeSet operation: Template error: Unable to get mapping for Config::YOURINFO::PrivateSubnetTwo

AWS CloudFormation, AWS::CloudFormation AWS CloudFormation Designer, Drift detection, AWS Cloud Development Kit (CDK), aws cloudformation, ServicesStack:, AWS CloudFormation Linter (cfn-lint), Former2, CloudCraft, Change sets, AWS CloudFormation Public Registry, CloudFormation snippets, CloudFormation templates, StackSets, Outputs:, Type:, Fn::Sub, !Ref, CloudFormation Parameters, AWS CloudFormation Templates, CloudFormation functions