Stack createion fails when using --parameters-override

[ghost]

When using the cloudformation deploy command with --parameter-overrides, stack creation fails with the following message -

An error occurred (ValidationError) when calling the CreateChangeSet operation: Cannot specify UsePreviousValue on Parameters when ChangeSetType is CREATE

I'm using the following command -

aws cloudformation deploy \
    --template-file template.yaml \
    --stack-name "TestStack" \
    --region eu-west-1 \
    --parameter-overrides \
        Environment="BVT"
        S3BucketName="bvt-dump-payload-test-eu-west-1"

My template contains the following Parameters definition -

Parameters:
  Environment:
    Type: String
    Description: The environment that is being deployed to, such as BVT, UAT, etc.
  S3BucketName:
    Type: String
    Description: The S3 Bucket to which the Lambda Function will output payloads.

I had found an issue on here suggesting tha tyou needed to declare a default value in the template, but that also produces the above error.

[digitalfiz]

If your paste is correct then you missed a \ after Environment="BVT" which would leave the S3BucketName="bvt-dump-payload-test-eu-west-1" out of the command. It would actually run S3BucketName="bvt-dump-payload-test-eu-west-1" as a separate command.

[ghost]

Ah, that is indeed the issue!

Fooled by the red herring returned by AWS, I assumed the command was correct and didn't consider it as the source of the problem.

Thanks for posting.

[digitalfiz]

np!