Did the definition of the CacheSubnets option change?

Question

My company is deploying our app on AWS. Looking at the code, this has been the same way for about 2 years.  
  
Here is an example of what the documentation says/which our code matches.

```
option_settings:
    "aws:elasticbeanstalk:customoption":
        CacheSubnets:
          - subnet-abcdefgh
          - subnet-12345678
          - subnet-1234abcd
```

The error we get on deployment says:

```
2020-07-29 02:23:02    ERROR   "option_settings" in one of the configuration files failed validation. More details to follow.
2020-07-29 02:23:02    ERROR   Invalid option value: '["subnet-abcdefgh","subnet-12345678","subnet-abcd1234"]' (Namespace: 'aws:elasticbeanstalk:customoption', OptionName: 'CacheSubnets'): Not a Scalar (number, string, or boolean): '["subnet-abcdefgh","subnet-12345678","subnet-abcd1234"]'
2020-07-29 02:23:03    ERROR   Failed to deploy application.
```

Were there any changes to this option in the last two weeks?

Accepted Answer

We are sorry for the deployment failures. Earlier we made changes to the 'aws:elasticbeanstalk:customoption' namespace workflow such that 'customoption' is returned as a response in the 'describe-configuration-settings' API call. The change led to deployment failures for some customers. We released a fix to address the bug. Now, you can deploy your code containing 'customoption' settings without any changes from your end.

Answer

We are having the same issue, have also posted a ticket.

Answer

Have you find any solution? I am facing same issue today.

Answer

Not yet. I submitted a ticket as well. I'll update when I have more information.

Did the definition of the CacheSubnets option change?

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