[Docs]: Docs do not specify that auto_rollback is only usable when launch_templates are used

[msmith93]

Documentation Link

https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/autoscaling_group#auto_rollback

Description

While testing, I noticed that an error is seen when setting auto_rollback on an aws_autoscaling_group resource with launch configuration

Error: starting Auto Scaling Group (canary-aws-eu-central-1-dev-probers-2546c63e1107f566-autoscaling-rolling) instance refresh: ValidationError: The request isn't valid. The AutoRollback parameter cannot be set to true when the DesiredConfiguration parameter is empty. Set AutoRollback to false or specify a desired configuration and try again.
│ 	status code: 400, request id: b8d2600b-bd0a-4bfc-a7a2-f7975e1cbb6b

A similar error was reported here: #29830

The bug has been fixed for ASGs backed by launch templates: #31715

But, based on my testing, the error still seems to exist when using launch configurations. Since launch configurations are deprecated, it doesn't make sense to fix this, but it should be clear in the documentation

References

#29830
#31715

Would you like to implement a fix?

Yes

[github-actions]

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[msmith93]

I was able to open a PR: https://github.com/hashicorp/terraform-provider-aws/pull/32429/files

[github-actions]

This functionality has been released in v5.9.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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