There is this behaviour I have observed sometimes with Cloudformation in AWS.

Description: Something here....
Parameters:
  StackName:
    Description: reference the StackName
    Type: String

  StageName:
    Description: reference the environment type (local, alpha, beta, uat, prod)
    Type: String

Resources:
  FileGenerationDLQ:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: !Sub "${StackName}-FileGenerationDLQ-${StageName}"
      MessageRetentionPeriod: 1209600
      ReceiveMessageWaitTimeSeconds: 20
      VisibilityTimeout: 925

  FileGenerationQueue:
    DependsOn: FileGenerationDLQ
    Type: AWS::SQS::Queue
    Properties:
      QueueName: !Sub "${StackName}-FileGeneration-${StageName}"
      MessageRetentionPeriod: 1209600
      ReceiveMessageWaitTimeSeconds: 0
      VisibilityTimeout: 925
      RedrivePolicy:
        deadLetterTargetArn: !GetAtt FileGenerationDLQ.Arn
        maxReceiveCount: 1

The above fails. However, if I comment the QueueName it works.

Ofcourse I have other things in the template but I have omitted them for privacy. Could anyone point me to the doc why this is happening? Does this have something to do with the Cloudformation template versions?