CodePipeline - Encountered unsupported property configuration

Question

When deploying this CloudFormation template through SLS I'm getting a cryptic error message with no more information from CloudFormation Events:

  FrontendPipeline:
    Type: 'AWS::CodePipeline::Pipeline'
    Properties:
      Name: FrontendPipeline-${opt:stage, 'dev'}
      RoleArn: !GetAtt FrontendCodePipeLineRole.Arn
      ArtifactStore:
        Location: !Ref FrontendPipelineBucket
        Type: S3
      Stages:
        - Name: FrontendSource
          Actions:
            - Name: FrontendSourceAction
              ActionTypeId:
                Category: Source
                Owner: AWS
                Provider: CodeCommit
                Version: 1
              Configuration:
                BranchName: "dev"
                OutputArtifactFormat: CODEBUILD_CLONE_REF
                RepositoryName: !GetAtt RepoFrontend.Name
              OutputArtifacts:
                - name: Frontend-${opt:stage, 'dev'}
        - Name: Build
          Actions:
            - Name: FrontendBuildAction
              ActionTypeId:
                Category: Build
                Owner: AWS
                Provider: CodeBuild
                Version: 1
              InputArtifacts:
                - Name: FrontendSource
              OutputArtifacts:
                - Name: FrontendBuild
              Configuration:
                ProjectName: !Ref FrontendCodeBuild

The error is:

Serverless Error ----------------------------------------

    An error occurred: CodePipeline - Encountered unsupported property configuration.

Which is ths unsuported property?

Answer 1

I see a few potential problems with your template:

• You use configuration in the first stage instead of Configuration like you do in the second
• You use outputArtifacts in the first stage instead of OutputArtifacts like you do in the second